A popular history of the British ferns and the allied plants, : comprising the club-mosses, pepperworts, and horsetails - Moore, Thomas, 1821 -1887 (Routledge, Warne, & Routledge, 1859)

A popular history of the British ferns, and the allied plants, comprising the club-mosses, pepperworts, and horsetails - Moore, Thomas, 1821 -1887 (Routledge, Warne & Routladge, 1862)

A popular history of the British ferns and the allied plants : comprising the club-mosses, pepperworts and horsetails - Moore, Thomas, 1821 -1887 (Lovell Reeve, 1855)

A popular history of the British ferns and the allied plants, comprising the club-mosses, pepperworts, and horsetails - Moore, Thomas, 1821 -1887 (Reeve and Benham, 1851)

A popular history of the British ferns and the allied plants, comprising the club-mosses, pepperworts, and horsetails - Moore, Thomas, 1821 -1887 (Routledge, Warne, & Routledge, 1859)

Popular science news, formerly Boston journal of chemistry. A popular illustrated monthly devoted to the progress in zoology, botany, mineralogy, archaeology, hygiene, invention, with related physical sciences and general scientific information - Agassiz Association. (J.R. Nichols & co. [etc.], 1866)

Populäre Naturgeschichte der drei Reiche - Jussieu, Adrien de, 1797 -1853 (Verlag von Scheible, Rieger & Sattler, 1845)

A practical guide to garden plants, containing descriptions of the hardiest and most beautiful annuals and biennials, hardy herbaceous and bulbous perennials, hardy water and bog plants, flowering and ornamental trees and shrubs, conifers; hardy ferns; hardy bamboos and other ornamental grasses. Also the best kinds of fruits and vegetables that may be grown in the open air in the British Isles with full and practical instruction as to culture and propagation - Weathers, John, 1867 -1928 (Longmans, Green, 1901)

Preisliste - Mann, Otto (Firm) (Otto Mann, 1908)

Preliminary classification of forest vegetation of the Kenai Peninsula, Alaska - Pacific Northwest Research Station (Portland, Or.) (U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 1990)

Preliminary host index to fungi of Mount Shasta, California - United States. Division of Mycology; Disease Survey. (Division of Mycology and Disease Survey, Bureau of Plant Industry, United States Department of Agriculture, 1940)

A preliminary list of the vascular flora of Allegheny County, Pennsylvania - Shafer, John Adolph, 1863 -1918 (Carnegie Institute Museum?, 1901)

Price list, 1933 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, 1933)

Price list, 1942 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Mission Gardens, 1942)

Price list, 1944 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Mission Gardens, 1944)

Price list, 1949 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Mission Gardens, 1949)

Price list, fall 1924 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, 1924)

Price list, fall 1925 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, 1925)

Price list, fall 1926 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, 1926)

Price list, fall 1927 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, 1927)

Price list : fall 1928 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (L.E. Williams Nursery Co, 1928)

Price list : fall 1931 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, 1931)

Price list, fall 1932–spring 1933 of hardy native mountain trees, shrubs, perennial wild flowers and ferns from the Blue Ridge Mountains of Western North Carolina - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Mrs. J. H. Von Canon, 1932)

Price list for spring 1941 : native ornamental plants for pleasing landscape effect - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Blue Ridge Rhododendron Gardens, 1941)

Price list of evergreens, trees, shrubs, vines, roses and herbaceous perennials : fall 1928 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Framingham Nurseries, 1928)

Price list of evergreens, trees, shrubs, vines, roses and herbaceous perennials : fall 1927 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Framingham Nurseries, 1927)

Price list of evergreens, trees, shrubs, vines, roses and herbaceous perennials : spring 1927 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Framingham Nurseries, 1927)

Price list of evergreens, trees, shrubs, vines, roses and herbaceous perennials : spring 1928 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Framingham Nurseries, 1928)

Price list of hardy perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (United States Nurseries, 1891)

Price list, spring 1924 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, 1924)

Price list, spring 1925 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, 1925)

Price list, spring 1926 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, 1926)

Price list, spring 1929 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, 1929)

Price list, spring 1930 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, 1930)

Price list : spring 1930 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Framingham Nurseries, 1930)

Price list : spring 1931 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, 1931)

Price list : spring 1932 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, 1932)

Price list, spring 1934 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, Incorporated, 1934)

Price list, spring 1936 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, Incorporated, 1936)

Price list, spring 1937 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, Incorporated, 1937)

A priced (and partially descriptive) Catalogue of Stove, Greenhouse and Hardy Exotic, and British Ferns : grown for sale by Abm. Stansfield & Sons ... Vale Nurseries, Todmorden - Stansfield, Abraham. (1865)

A priced (and partially descriptive) Catalogue of Stove, Greenhouse and Hardy Exotic, and British Ferns : offered for sale by Abm. Stansfield & Sons ... Vale Nurseries, Todmorden - Stansfield, Abraham. (1869)

Pricelist of hardy perennials and bulbs - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Terrell's Aquatic Nurseries, 1933)

Primitiae florae costaricensis - Durand, Th. (Théophile), 1855 -1912 (Jardin botanique de l'état, 1891)

Principal range plants of the central and southern Rocky Mountains : names and symbols - Nickerson, Mona F. (Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1976)

Principles of botany - Bergen, Joseph Y. (Joseph Young), 1851 -1917 (Ginn, 1906)

Principles of botany - Bergen, Joseph Y. (Joseph Young), 1851 -1917 (Ginn & company, 1906)

Principles of botany - Bergen, Joseph Y. (Joseph Young), 1851 -1917 (Ginn & Company, 1906)

The principles of plant-teratology - Worsdell, Wilson Crosfield (The Ray Society, 1915)

Prirodoslovna istraživanja - Jugoslavenska akademija znanosti i umjetnosti. (1916)

Les problèmes de la sexualité - Caullery, Maurice, 1868 -1958 (E. Flammarion, 1919)

Problems of cytology and evolution in the Pteridophyta - Manton, I. (University Press, 1950)

Proceedings (and Annual Report) of the Holmesdale Natural History Club, Reigate - Holmesdale Natural History Club. (1865)

Proceedings and Transactions of the Croydon Microscopical & Natural History Club - Croydon Microscopical; Natural History Club. (1871)

Proceedings and Transactions of the Croydon Microscopical & Natural History Club - Croydon Microscopical; Natural History Club. (1889)

Proceedings and Transactions of the Croydon Microscopical & Natural History Club - Croydon Microscopical; Natural History Club. (1901)

Proceedings and transactions of the Croydon Natural History and Scientific Society - Croydon Natural History; Scientific Society. (Croydon Natural History and Scientific Society, 1903)

Proceedings and transactions of the Croydon Natural History and Scientific Society - Croydon Natural History; Scientific Society. (Croydon Natural History and Scientific Society, 1905)

Proceedings and transactions of the Natural History Society of Glasgow - Natural History Society of Glasgow. (The Society, 1886)

Proceedings and transactions of the Royal Society of Canada. Délibérations et mémoires de la Société royale du Canada - Royal Society of Canada. (Société royale du Canada, 1885)

Proceedings and transactions of the South London Entomological & Natural History Society - South London Entomological; Natural History Society (The Society, 1950)

Proceedings and transactions of the South London Entomological & Natural History Society - South London Entomological; Natural History Society (The Society, 1956)

Proceedings and transactions of the South London Entomological & Natural History Society - South London Entomological; Natural History Society (The Society, 1959)

Proceedings - Cambridge Philosophical Society. Mathematical and physical sciences - Cambridge Philosophical Society. (Cambridge Philosophical Society [etc.], 1910)

Proceedings of the American Academy of Arts and Sciences - American Academy of Arts; Sciences. (Metcalf and Co, 1865)

Proceedings of the American Academy of Arts and Sciences - American Academy of Arts; Sciences. (Metcalf and Co, 1868)

Proceedings of the Asiatic Society of Bengal - Asiatic Society of Bengal ([The Society], 1890)

Proceedings of the Bath Natural History and Antiquarian Field Club - Bath Natural History; Antiquarian Field Club. (1874)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1921)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1930)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1938)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1985)

Proceedings of the Boston Society of Natural History - Boston Society of Natural History. (Boston Society of Natural History, 1921)

Proceedings of the Boston Society of Natural History - Boston Society of Natural History. (Boston Society of Natural History, 1923)

Proceedings of the Botanical Society of the British Isles - Botanical Society of the British Isles. (1954)