Kryptogamenflora für Anfänger : eine Einführung in das Studium der blütenlosen Gewächse für Studierende und Liebhaber - Lindau, Gustav, 1866 -1923 (Springer, 1922)

Kunene-Sambesi-expedition, H. Baum, 1903 - Deutsche Kolonialgesellschaft. Kolonial-wirtschaftliches Komitee. (Verlag des Kolonial-wirtschaftlichen Komitees, 1903)

Kungl. Svenska vetenskapsakademiens handlingar - Kungl. Svenska vetenskapsakademien. (L.L. Grefing, 1903)

Kunstformen der Natur - Bibliographisches Institut Leipzig. (Verlag des Bibliographischen Instituts, 1899)

Laboratory and field manual of botany - Bergen, Joseph Y. (Joseph Young), 1851 -1917 (Ginn & company, 1907)

Laboratory and field manual of botany - Bergen, Joseph Y. (Joseph Young), 1851 -1917 (Ginn & Company, 1907)

Laboratory directions in general biology - Conklin, Edwin Grant, 1863 -1952 (Princeton University Press, 1900)

A laboratory guide for general botany - Gager, C. Stuart (Charles Stuart), 1872 -1943 (Blakiston, 1919)

A laboratory guide for general botany - Gager, C. Stuart (Charles Stuart), 1872 -1943 (Blakiston, 1916)

A laboratory guide for general botany - Gager, C. Stuart (Charles Stuart), 1872 -1943 (P. Blakiston's Son & Co, 1919)

A laboratory guide for general botany - Gager, C. Stuart (Charles Stuart), 1872 -1943 (P. Blakiston's son & co, 1916)

A laboratory manual in elementary biology; an inductive study in animal and plant morphology designed for preparatory and high schools - Boyer, Emanuel Roth, 1851 -1900 (Heath, 1894)

Laboratory manual in medical bacteriology - Columbia University. Dept. of Bacteriology. (Dougherty, 1929)

A laboratory manual in practical botany - Clark, Charles H. (Charles Herbert), 1854 - (American book company, 1898)

A laboratory manual of high school botany - Clements, Frederic E. (Frederic Edward), 1874 -1945 (The University publishing co, 1900)

Leaflets of Philippine botany (Oriental Printing Co, 1913)

Lectures on plant physiology - Harvey-Gibson, R. J. (Robert John), 1860 -1929 (Clarendon Press, 1907)

Lectures on plant physiology - Jost, Ludwig, 1865 -1947 (Clarendon Press, 1907)

Lectures on the evolution of plants (The Macmillan Co, 1899)

Lectures on the evolution of plants (The Macmillan company, 1899)

Lectures on the physiology of plants - Vines, Sydney Howard, 1849 -1934 (Univ. Press, 1886)

Lectures on the physiology of plants - Vines, Sydney Howard, 1849 -1934 (University Press, 1886)

Lectures on the physiology of plants - Vines, Sydney Howard, 1849 -1934 (University press, 1886)

Lectures on the physiology of plants - Vines, Sydney Howard, 1849 -1934 (The University Press, 1886)

Lehrbuch der Baumkrankheiten - Hartig, Robert, 1839 -1901 (Springer, 1889)

Lehrbuch der Baumkrankheiten - Hartig, Robert, 1839 -1901 (Springer, 1882)

Lehrbuch der Botanik für Hochschulen - Strasburger, Eduard, 1844 -1912 (G. Fischer, 1911)

Lehrbuch der Botanik; für höhere Lehranstalten und die Hand des Lehrers, sowie für alle Freunde der Natur. Unter besonderer Berücksichtigung biologischer Verhältnisse bearb. von Otto Schmeil - Schmeil, O. (Otto), 1860 -1943 (Quelle & Meyer, 1911)

Lehrbuch der Botanik für höhere Lehranstalten und die Hand des Lehrers - Schmeil, O. (Otto), 1860 -1943 (E. Nägele, 1903)

Lehrbuch der Botanik, für mittlere und höhere lehranstalten - Prantl, Karl, 1849 -1893 (W. Engelmann, 1891)

Lehrbuch der Botanik für mittlere und höhere Lehrenstalten - Prantl, Karl, 1849 -1893 (W. Engelmann, 1883)

Lehrbuch der Pflanzenkranzkheiten : für Botaniker, Forstleute, Landwirthe und Gärtner - Hartig, Robert, 1839 -1901 (Springer, 1900)

Lehrbuch der pilzparasitären Pflanzenkrankheiten mit besonderer Berücksichtigung der Krankheiten gärtnerischer Kulturgewächse - Höstermann, Gustav (P. Parey, 1923)

Leopoldina - Kaiserlich Leopoldinisch-Carolinische Deutsche Akademie der Naturforscher (E. Blochmann & Sohn, 1877)

Lessons in the structure, life, and growth of plants, for schools and academies - Wood, Alphonso, 1810 -1881 (A.S. Barnes & company, 1889)

Lessons in the structure, life, and growth of plants, for schools and academies - Wood, Alphonso, 1810 -1881 (American Book Company, 1889)

Letters on the diseases of plants. Second series - New South Wales. Dept. of Agriculture. (W.A. Gullick, gov't printer, 1904)

Lichens - Smith, Annie Lorrain, 1854 - (Univ. Press, 1921)

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List of intercepted plant pests - United States. Agricultural Research Service. (U.S. G.P.O.], 1942)

List of intercepted plant pests - United States. Agricultural Research Service. (U.S. G.P.O.], 1943)

List of intercepted plant pests - United States. Agricultural Research Service. (U.S. G.P.O.], 1948)

List of intercepted plant pests - United States. Agricultural Research Service. (U.S. G.P.O.], 1963)

List of intercepted plant pests - United States. Agricultural Research Service. (U.S. G.P.O.], 1950)

List of intercepted plant pests - United States. Agricultural Research Service. (U.S. G.P.O.], 1951)

List of intercepted plant pests - United States. Agricultural Research Service. (U.S. G.P.O.], 1956)

List of intercepted plant pests - United States. Agricultural Research Service. (U.S. G.P.O.], 1953)

List of intercepted plant pests - United States. Agricultural Research Service. (U.S. G.P.O.], 1961)

List of intercepted plant pests - United States. Agricultural Research Service. (U.S. G.P.O.], 1958)

List of intercepted plant pests - United States. Agricultural Research Service. (U.S. G.P.O.], 1957)

List of intercepted plant pests - United States. Agricultural Research Service. (U.S. G.P.O.], 1962)

List of intercepted plant pests - United States. Agricultural Research Service. (U.S. G.P.O.], 1952)

List of intercepted plant pests - United States. Agricultural Research Service. (U.S. G.P.O.], 1949)

A list of works on North American fungi - Trelease, William, 1857 -1945 (Library of Harvard University, 1887)

A list of works on North American fungi. A supplemental list of works on North American fungi - Trelease, William, 1857 -1945 (Library of Harvard University, 1888)

List of works relating to the natural history departments of the British Museum, to the end of the year 1910 - British Museum (Natural History) (Trustees of the British Museum, 1911)

The living plant in leaf, flower, and fruit : a popular book on botany for the general reader - Step, Edward, 1855 -1931 (Hutchinson & Co, 1904)

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London Naturalist - London Natural History Society. (London Natural History Society, 1947)

London Naturalist - London Natural History Society. (London Natural History Society, 1949)

London Naturalist - London Natural History Society. (London Natural History Society, 1958)

London Naturalist - London Natural History Society. (London Natural History Society, 1984)

London Naturalist - London Natural History Society. (London Natural History Society, 2001)

London Naturalist - London Natural History Society. (London Natural History Society, 2003)

London Naturalist - London Natural History Society. (London Natural History Society, 2004)

London Naturalist - London Natural History Society. (London Natural History Society, 2005)

London Naturalist - London Natural History Society. (London Natural History Society, 2006)

London Naturalist - London Natural History Society. (London Natural History Society, 2007)

Long Island Botanical Society newsletter - Long Island Botanical Society. (Long Island Botanical Society, 1994)

The lower fungi Phycomycetes - Fitzpatrick, Harry Morton, 1886 -1949 (McGraw-Hill, 1930)