Proceedings of the Chester Society of Natural Science - Chester Society of Natural Science. (1874)

Proceedings of the Cotteswold Naturalists' Field Club - Cotteswold Naturalists' Field Club. (1860)

Proceedings of the Delaware County Institute of Science - Delaware County Institute of Science. (The Institute, 1905)

Proceedings of the Dublin University Zoological and Botanical Association - Dublin University. Zoological; Botanical Association.

Proceedings of the Entomological Society of Philadelphia - American Entomological Society. ([Printed by the Society], 1865)

The Proceedings of the Iowa Academy of Science - Iowa Academy of Science (The Academy, 1895)

Proceedings of the Linnean Society of London - Linnean Society of London. (Published for the Linnean Society of London by Academic Press [etc.], 1848)

Proceedings of the Linnean Society of London - Linnean Society of London. (Published for the Linnean Society of London by Academic Press [etc.], 1875)

Proceedings of the Linnean Society of New South Wales - Linnean Society of New South Wales. (Linnean Society of New South Wales, 1894)

Proceedings of the Linnean Society of New South Wales - Linnean Society of New South Wales. (Linnean Society of New South Wales, 1900)

Proceedings of the Linnean Society of New South Wales - Linnean Society of New South Wales. (Linnean Society of New South Wales, 1908)

Proceedings of the Literary and Philosophical Society of Manchester - Literary; Philosophical Society of Manchester. (The Society, 1860)

Proceedings of the Natural history society of Dublin for the session ... - Natural History Society of Dublin. (Printed for the Society, 1862)

Proceedings of the Natural history society of Dublin for the session ... - Natural History Society of Dublin. (Printed for the Society, 1865)

Proceedings of the Natural History Society of Glasgow - Natural History Society of Glasgow. (Natural History Society of Glasgow, 1869)

Proceedings of the Natural History Society of Glasgow - Natural History Society of Glasgow. (Natural History Society of Glasgow, 1880)

Proceedings of the Perthshire Society of Natural Science - Perthshire Society of Natural Science. (1870)

Proceedings of the Royal Irish Academy - Royal Irish Academy. (Royal Irish Academy, 1863)

Proceedings of the Royal Irish Academy - Royal Irish Academy. (Royal Irish Academy, 1901)

Proceedings of the Royal Physical Society of Edinburgh - Royal Physical Society of Edinburgh. (The Society, 1867)

Proceedings of the Royal Physical Society of Edinburgh - Royal Physical Society of Edinburgh. (The Society, 1904)

Proceedings of the Royal Society of Edinburgh - Royal Society of Edinburgh. (Royal Society of Edinburgh, 1884)

Proceedings of the Royal Society of Edinburgh - Royal Society of Edinburgh. (Royal Society of Edinburgh, 1909)

Proceedings of the Royal Society of London - Royal Society (Great Britain) (The Society, 1889)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1903)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1917)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1922)

Pronunciation of plant names - Garden Club of America. (Reproduced and printed by National Process Company], 1922)

Protoplasmic theory of life - Drysdale, J. G. S. (Bailliere, Tindall & Cox, 1874)

Protozoology - Kudo, Richard R. (Richard Roksabro), 1886 -1967 (C. C. Thomas, 1954)

Protozoology - Kudo, Richard R. (Richard Roksabro), 1886 -1967 (C.C. Thomas, 1946)

Protozoology - Kudo, Richard R. (Richard Roksabro), 1886 -1967 (Thomas, 1939)

Publication. Field Museum of Natural History. Botanical series - Field Museum of Natural History. (Field Museum of Natural History, 1941)

Publication. Field Museum of Natural History. Botanical series - Field Museum of Natural History. (Field Museum of Natural History, 1931)

Quarterly journal of conchology (D. Bogue, 1875)

Quarterly journal of conchology (D. Bogue, 1878)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1854)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1855)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1856)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1858)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1863)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1868)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1892)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1910)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1921)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1920)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1853)

Quarterly Magazine of the High Wycombe Natural History Society - High Wycombe Natural History Society. (1866)

Quarterly report - Montana Fish; Game Commission. Wildlife Restoration Division. (The Division, 1953)

Rainbow holiday specials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Everglades Aquatic Nurseries, 1936)

Rambles in search of wild flowers, and how to distinguish them - Plues, Margaret (Journal of horticulture and cottage gardener, 1864)

Range plants of Arizona and New Mexico : names, symbols and notations - Rocky Mountain Forest; Range Experiment Station (Fort Collins, Colo.) (Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S.D.A, 1958)

The Ranidae : how to breed, feed and raise the edible frog - Meadow Brook Farm. (The Meadow Brook farm, 1905)

Rapport sur une mission scientifique dans les jardins et établissements zoologiques publics et privés des États-unis et du Canada et conclusions générales sur les jardins zoologiques - Loisel, Gustave. (Imprimerie National, 1908)

Rarity, quality, our specialty, hobby - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Everglades Aquatic Nurseries, 1935)

The reactions of Planarians to light / by Herbert Eugene Walter - Walter, Herbert Eugene, 1867 -1945 (1906)

The Record of zoological literature (J. van Voorst, 1866)

The Record of zoological literature (J. van Voorst, 1869)

Recreation - Shields, G. O. (George Oliver), 1846 -1925 (G.O. Shields (Coquina), 1894)

Recreative Science (1860)

Répertoire alphabétique des noms spécifiques admis ou proposés dans la sous-famille des libellulines avec indications bibliographiques, iconographiques et géographiques - Preudhomme de Borre, Alfred. 1833 -1905 (F. Hayez, 1889)

Répertoire des noms génériques mentionnés dans l'Index kewensis et ses quinze premiers suppléments = Guide to the generic names appearing in the Index Kewensis and its fifteen supplements = Repertorio de los nombres genericos enumerados en el Index Kewensis y sus quince suplementos = Repertorium der im Index Kewensis und seinen fuenfzehn ersten Supplementen erwaehnten Gattungsnamen - Rouleau, Ernest 1916 -1991 (Châtelain, 1981)

Repertorium annuum literaturae botanicae periodicae - Bemmelen, J. A. van. (Erven Loosjes, 1873)

Report - British Columbia Provincial Museum. (Printed by W.H. Cullin, 1957)

Report & transactions - Birmingham Natural History; Microscopical Society (Birmingham, England) (Herald Press)

Report & transactions - Birmingham Natural History; Microscopical Society (Birmingham, England) (Herald Press, 1880)

Report (and Abstracts of Proceedings and Papers) of the Brighton and Sussex Natural History and Philosophical Society - Brighton; Sussex Natural History; Philosophical Society. (1870)

Report and Transactions of the Glasgow Society of Field Naturalists - Glasgow Society of Field Naturalists. (Glasgow Society of Field Naturalists, 1873)

Report / Botanical Exchange Club - Botanical Exchange Club. (1877)

Report / Botanical Society and Exchange Club of the British Isles - Botanical Society; Exchange Club of the British Isles. (1929)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1848)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1850)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1865)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1886)

Report of the Chester Society of Natural Science, Literature and Art - Chester Society of Natural Science Literature; Art. (1873)

Report of the Commissioner for ... - Baird, Spencer Fullerton, 1823 -1887 (G.P.O, 1884)

Report of the Commissioner for ... - Baird, Spencer Fullerton, 1823 -1887 (G.P.O, 1881)

Report of the Commissioner for ... - Baird, Spencer Fullerton, 1823 -1887 (G.P.O, 1887)

Report of the Commissioner for ... - Baird, Spencer Fullerton, 1823 -1887 (G.P.O, 1898)

Report of the Commissioner for ... - Baird, Spencer Fullerton, 1823 -1887 (G.P.O, 1897)

Report of the Commissioner for ... - Baird, Spencer Fullerton, 1823 -1887 (G.P.O, 1899)

Report of the Curator / Botanical Exchange Club - Botanical Exchange Club. (1869)

Report of the Curator / Botanical Exchange Club - Botanical Exchange Club. (1877)

Report of the East Kent Natural History Society - East Kent Natural History Society. (1858)

Report of the flora of Westchester County - Bolton, Robert, 1814 -1877 (Roper & Burdge, 1880)

Report of the Liverpool Microscopical Society - Liverpool Microscopical Society. (1887)

Report of the Missouri State Horticultural Society for the year - Missouri State Horticultural Society. (The Society, 1886)

Report of the State Commissioners of Fisheries for the year - Pennsylvania. State Commissioners of Fisheries. (The Commissioners], 1898)

Report of the United States Geological Survey of the territories - Lesquereux, Léo, 1806 -1889 (Govt. Print. Off, 1873)

Report on the progress and condition of the U.S. National Museum for the year ending June 30 ... - United States National Museum (G.P.O, 1908)

Reports of the Survey. Botanical series - Geological; Natural History Survey of Minnesota. (1892)

Reports on the progress of zoology and botany, 1841, 1842 - Link, Heinrich Friedrich, 1767 -1851 (Printed for the Ray Society, 1845)

Resources of the southern fields and forests, medical, economical, and agricultural - Porcher, Francis Peyre, 1825 -1895 (Walker, Evans & Cogswell, printers, 1869)

Retail price list : all orders sent postpaid - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Glendale Flower and Water Gardens, 1939)

Retail price list : all orders sent postpaid - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Glendale Flower and Water Gardens, 1941)

Retail price list : all orders sent postpaid : buy dependable California grown aquatics to obtain best results - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Glendale Flower and Water Gardens, 1954)

Retail price list : all orders sent postpaid : buy dependable California grown aquatics to obtain best results - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Glendale Flower and Water Gardens, 1956)

Retail price list : all orders sent postpaid : buy dependable California grown aquatics to obtain best results - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Glendale Flower and Water Gardens, 1955)

Retail price list : all orders sent postpaid : buy dependable California grown aquatics to obtain best results - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Glendale Flower and Water Gardens, 1953)

Retail price list : all orders sent postpaid : buy dependable California grown aquatics to obtain best results - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Glendale Flower and Water Gardens, 1951)

Retail price list : all orders sent postpaid : buy dependable California grown aquatics to obtain best results - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Glendale Flower and Water Gardens, 1950)

Retail price list : all orders sent postpaid : buy dependable California grown aquatics to obtain best results - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Glendale Flower and Water Gardens, 1948)

Retail price list : buy dependable California grown aquatics to obtain best results - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Glendale Flower and Water Gardens, 1958)

Retail price list : buy dependable California grown aquatics to obtain best results - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Glendale Flower and Water Gardens, 1957)

Retail prices of water lilies, etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Van Ness Water Gardens, 1932)