Bulb propagation and trade study - Oldfield, Sara (WWF, 1989)

Bulbs - International Bulb Society. (International Bulb Society, 2001)

Bulbs - International Bulb Society. (International Bulb Society, 2002)

Bulbs - International Bulb Society. (International Bulb Society, 2003)

Bulbs - International Bulb Society. (International Bulb Society, 2004)

Bulbs - International Bulb Society. (International Bulb Society, 2005)

Bulbs : advance offering, 1926 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Stumpp & Walter Co, 1926)

Bulbs and plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Lakemont Gardens, 1948)

Bulbs and plants for fall planting, 1939 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Holm & Olson, Inc, 1939)

Bulbs and plants for fall planting, 1940 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Holm & Olson, Inc, 1940)

Bulbs for autumn planting - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Stumpp & Walter Co, 1915)

Bulbs for Autumn planting Fall 1919 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Stumpp & Walter Co, 1919)

Bulbs for fall planting : a catalog of daffodils, tulips, freesias, hyacinths, amaryllis, clivias, gladiolus, orchids, and many others for fall planting, and how to gro them in house or garden : fall 1938 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1938)

Bulbs for fall planting : a catalog of the amaryllis, iris, lily, orchid and other plant families, fall 1943 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1943)

Bulbs for fall planting : a catalog of the amaryllis, iris, lily, arum, orchid and other families : over 250 items of new and unusual as well as standard varieties of bulbs, with complete culture directions : our bulb prices are lower : fall 1941 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1941)

Bulbs for fall planting : a catalogue of daffodils, tulips, freesias, anemones, ranunculus, amaryllis, clivias, gladiolus, lilies, and many others : fall 1940 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1940)

Bulbs for pots and fall planting in the garden : a catalog of bulbs and plants of the amaryllis, iris, orchid, gesneria and other plant families, and manual of culture, African violets, fall 1959 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1959)

Bulbs for pots and fall planting in the garden, fall 1944 : a catalog of bulbs of the amaryllis, iris, lily, orchid, arum. oxalis and other plant families - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1944)

Bulbs for pots and fall planting in the garden, fall 1945 : a catalog of bulbs of the amaryllis, iris, lily, orchid, arum. oxalis and other plant families - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1945)

Bulbs for pots and fall planting in the garden, fall 1946 : a catalog of bulbs of the amaryllis, iris, lily, orchid, oxalis and other plant families - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1946)

Bulbs for pots and fall planting in the garden, fall 1947 : a catalog of bulbs of the amaryllis, iris, lily, orchid, oxalis and other plant families - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1947)

Bulbs for pots and fall planting in the garden, fall 1948 : a catalog of bulbs of the amaryllis, iris, lily, orchid, oxalis and other plant families - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1948)

Bulbs for pots and fall planting in the garden, fall 1949 : a catalog of bulbs of the amaryllis, iris, orchid, and other plant families - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1949)

Bulbs for pots and fall planting in the garden, fall 1950 : a catalog of bulbs of the amaryllis, iris, lily, orchid, and other plant families - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1950)

Bulbs for pots and fall planting in the garden, fall 1951 : a catalog of bulbs and plants of the amaryllis, iris, lily, orchid, and other plant families - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1951)

Bulbs for pots and fall planting in the garden, fall 1952 : a catalog of bulbs and plants of the amaryllis, iris, geranium, orchid, gesneria, and other plant families, and manual of culture - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1952)

Bulbs for pots and fall planting in the garden, fall 1953 : a catalog of bulbs and plants of the amaryllis, iris, geranium, orchid, gesneria, and other plant families, and manual of culture - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1953)

Bulbs for pots and fall planting in the garden, fall 1954 : a catalog of bulbs and plants of the amaryllis, iris, orchid, gesneria and other plant families, and manual of culture - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1954)

Bulbs for pots and fall planting in the garden, fall 1955 : a catalog of bulbs and plants of the amaryllis, iris, orchid, gesneria and other plant families, and manual of culture - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1955)

Bulbs for pots and fall planting in the garden, fall 1956 : a catalog of bulbs and plants of the amaryllis, iris, orchid, gesneria and other plant families, and manual of culture - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1956)

Bulbs for pots and fall planting in the garden, fall 1957 : a catalog of bulbs and plants of the amaryllis, iris, orchid, gesneria and other plant families, and manual of culture - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1957)

Bulbs for pots and fall planting in the garden, fall 1958 : a catalog of bulbs and plants of the amaryllis, iris, orchid, gesneria and other plant families, and manual of culture - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1958)

Bulbs for pots and fall planting in the garden, spring 1948 : a catalog of bulbs of the amaryllis, iris, lily, orchid, oxalis and other plant families - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1948)

Bulbs for pots and spring planting in the garden : a catalog of the bulbs and plants of the amaryllis, iris, orchid, gesneria and other plant families and manual of their culture, African violets, spring 1959 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1959)

Bulbs for pots and spring planting in the garden, spring 1947 : a catalog of bulbs of the amaryllis, iris, orchid and other plant families - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1947)

Bulbs for pots and spring planting in the garden, spring 1944 : a catalog of bulbs of the amaryllis, iris, lily, orchid, arum. oxalis and other plant families - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1944)

Bulbs for pots and spring planting in the garden, spring 1945 : a catalog of bulbs of the amaryllis, iris, lily, orchid, arum, oxalis and other plant families - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1945)

Bulbs for pots and spring planting in the garden, spring 1949 : a catalog of bulbs of the amaryllis, iris, orchid and other plant families - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1949)

Bulbs for pots and spring planting in the garden, spring 1955 : a catalog of bulbs and plants of the amaryllis, orchid, gesneria and other plant families and manual of their culture - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1955)

Bulbs for pots and spring planting in the garden, spring 1953 : a catalog of bulbs and plants of the amaryllis, iris, orchid, gesneria and other plant families and manual of their culture - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1953)

Bulbs for pots and spring planting in the garden, spring 1952 : a catalog of bulbs of the amaryllis, iris, orchid, gesneria and other plant families - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1952)

Bulbs for pots and spring planting in the garden, spring 1951 : a catalog of bulbs of the amaryllis, iris, orchid and other plant families - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1951)

Bulbs for pots and spring planting in the garden, spring 1958 : a catalog of bulbs and plants of the amaryllis, iris, orchid, gesneria and other plant families and manual of their culture - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1958)

Bulbs for pots and spring planting in the garden, spring 1957 : a catalog of bulbs and plants of the amaryllis, iris, orchid, gesneria and other plant families and manual of their culture - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1957)

Bulbs for pots and spring planting in the garden, spring 1956 : a catalog of bulbs and plants of the amaryllis, iris, orchid, gesneria and other plant families and manual of their culture - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1956)

Bulbs for pots and spring planting in the garden, spring 1954 : a catalog of bulbs and plants of the amaryllis, iris, orchid, gesneria and other plant families and manual of their culture - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1954)

Bulbs for pots and spring planting in the garden, spring 1950 : a catalog of bulbs of the amaryllis, iris, orchid and other plant families - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1950)

Bulbs for spring planting : a catalog of amaryllis, clivias, crinums, other amaryllids, iris, gladiolus, orchids, colored callas, fancy leaf caladiums, arums, liliums and many others with culture directions ... : spring 1940 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1940)

Bulbs for spring planting : a catalog of amaryllis, crinums, clivias, iris, gladiolus, callas, fancy leaved caladiums, tuberous begonias, and many other rare and fine bulbs : spring 1939 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1939)

Bulbs for spring planting : a catalog of the amaryllis, iris, lily, arum, orchid, billbergias and other families : spring 1942 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1942)

Bulbs for spring planting : a catalog of the amaryllis, iris, lily, arum, orchid and other families : listing new callas, orchids, amaryllids and miscellaneous bulbs : spring 1941 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cecil Houdyshel, 1941)

Bulbs, seeds, plants for autumn planting : 1925 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Stumpp & Walter Co, 1925)

Buletinul de informații al Grădinii Botanice și al Muzeului Botanic dela Universitatea din Cluj. Bulletin d'informations du Jardin et du Musée botaniques de l'Université de Cluj, Roumanie - Universitatea din Cluj. Grădina Botanică. (Grădina Botanică, 1922)

Bulletin - New York State Museum; Science Service. (University of the State of New York, 1956)

Bulletin - Philippines. Bureau of Forestry. (Bureau of printing, 1919)

Bulletin - East Africa Natural History Society. (East Africa Natural History Society, 1979)

Bulletin - East Africa Natural History Society. (East Africa Natural History Society, 1983)

Bulletin - Société des amis des sciences naturelles de Rouen. (1883)

Bulletin - East Africa Natural History Society. (East Africa Natural History Society, 1993)

Bulletin - United States National Museum (G.P.O, 1967)

Bulletin - National Museum of Canada. (National Museum of Canada, 1957)

Bulletin - Chicago Natural History Museum. (The Museum, 1947)

Bulletin de géographie botanique - Académie internationale de botanique. (Au siège de la Société, 1917)

Bulletin de l'Herbier Boissier - Herbier Boissier. (Impr. Romet, 1908)

Bulletin de l'Institut botanique de Buitenzorg - Kebun Raya Indonesia. (1898)

Bulletin de la Société neuchâteloise des sciences naturelles - Société neuchâteloise des sciences naturelles. (Impr. wolfrath, 1923)

Bulletin de la Société botanique de France - Centre national de la recherche scientifique (France) (La Société, 1892)

Bulletin de la Société botanique de France - Centre national de la recherche scientifique (France) (La Société, 1921)

Bulletin de la Société linnéenne de Bordeaux - Société Linnéenne de Bordeaux. (La Société, 1991)

Bulletin de la Société linnéenne de Bordeaux - Société Linnéenne de Bordeaux. (La Société, 2001)

Bulletin de la Société royale de botanique de Belgique - Société royale de botanique de Belgique. (La Société, 1866)

Bulletin de la Société royale de botanique de Belgique - Société royale de botanique de Belgique. (La Société, 1878)

Bulletin de la Société royale de botanique de Belgique - Société royale de botanique de Belgique. (La Société, 1897)

Bulletin de la Société royale de botanique de Belgique - Société royale de botanique de Belgique. (La Société, 1900)

Bulletin de la Société royale de botanique de Belgique - Société royale de botanique de Belgique. (La Société, 1901)

Bulletin de la Société royale de botanique de Belgique - Société royale de botanique de Belgique. (La Société, 1912)

Bulletin du Jardin botanique de l'état, Bruxelles. Bulletin van de Rijksplantentuin, Brussel - Jardin botanique de l'Etat (Belgium) (Jardin botanique de l'état, 1910)

Bulletin du Jardin botanique de l'état, Bruxelles. Bulletin van de Rijksplantentuin, Brussel - Jardin botanique de l'Etat (Belgium) (Jardin botanique de l'état, 1913)

Bulletin du Jardin botanique de l'état, Bruxelles. Bulletin van de Rijksplantentuin, Brussel - Jardin botanique de l'Etat (Belgium) (Jardin botanique de l'état, 1916)

Bulletin du Muséum National d'Histoire Naturelle Section B,Adansonia, botanique, phytochimie - Muséum national d'histoire naturelle (France) (Muséum National d'Histoire Naturelle, 1986)

Bulletin du Muséum National d'Histoire Naturelle Section B,Adansonia, botanique, phytochimie - Muséum national d'histoire naturelle (France) (Muséum National d'Histoire Naturelle, 1988)

Bulletin du Muséum National d'Histoire Naturelle Section B,Adansonia, botanique, phytochimie - Muséum national d'histoire naturelle (France) (Muséum National d'Histoire Naturelle, 1991)

Bulletin du Muséum National d'Histoire Naturelle Section B,Adansonia, botanique, phytochimie - Muséum national d'histoire naturelle (France) (Muséum National d'Histoire Naturelle, 1992)

Bulletin du Muséum National d'Histoire Naturelle Section B,Adansonia, botanique, phytochimie - Muséum national d'histoire naturelle (France) (Muséum National d'Histoire Naturelle, 1995)

Bulletin from the laboratories of natural history of the State University of Iowa - University of Iowa. (The University, 1925)

Bulletin - Illinois. Natural History Survey Division (State of Illinois, Dept. of Registration and Education, Natural History Survey Division, 1918)

Bulletin - Illinois. Natural History Survey Division (State of Illinois, Dept. of Registration and Education, Natural History Survey Division, 1953)

Bulletin international de l'Académie des sciences de Cracovie, Classe des sciences mathématiques et naturelles. Anzeiger der Akademie der Wissenschaften in Krakau. Reihe B, Biologische Wissenschaften Srie B Sciences naturelles - Akademja Umiejętności w Krakowie. Wydział Matematyczno-Przyrodniczy (Impr. de l'Universit, 1912)

Bulletin international de l'Académie des sciences de Cracovie Classe des sciences mathématiques et naturelles - Akademja Umiejętności w Krakowie. Wydział Matematyczno-Przyrodniczy (Impr. de l'Université, 1906)

Bulletin / New York State Museum - New York State Museum. (New York State Education Dept, 1903)

Bulletin of foreign plant introductions - United States. Office of Foreign Seed; Plant Introduction. (s.n, 1910)

Bulletin of foreign plant introductions - United States. Office of Foreign Seed; Plant Introduction. (s.n, 1911)

Bulletin of foreign plant introductions - United States. Office of Foreign Seed; Plant Introduction. (s.n, 1912)

Bulletin of foreign plant introductions - United States. Office of Foreign Seed; Plant Introduction. (s.n, 1913)

Bulletin of miscellaneous information - Royal Botanic Gardens, Kew. (H.M. Stationery Office, 1903)

Bulletin of miscellaneous information - Royal Botanic Gardens, Kew. (H.M. Stationery Office, 1902)

Bulletin of miscellaneous information - Royal Botanic Gardens, Kew. (H.M. Stationery Office, 1907)