Physis - Sociedad Argentina de Ciencias Naturales. (Asociación Argentina de Ciencias Naturales [etc.], 1915)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1970)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1982)

The pictorial museum of animated nature - Knight, Charles, 1791 -1873 (C. Cox, 1844)

The pictorial museum of animated nature ... - Knight, Charles, 1791 -1873 (C. Knight, 1844)

Plain and pleasant talk about fruits, flowers, and farming - Making of America Project (Derby & Jackson, 1859)

Plain and pleasant talk about fruits, flowers and farming - Beecher, Henry Ward, 1813 -1887 (Derby & Jackson, 1859)

Plant-breeding; being five lectures upon the amelioration of domestic plants - Bailey, L. H. (Liberty Hyde), 1858 -1954 (Macmillan, 1895)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1929)

Plantes fourragères prairies et pâturages - Malte, M. O. (Malte Oscar), 1880 -1933 (Ministre de l'Agriculture, 1913)

Pleasant talk about fruits, flowers and farming - Beecher, Henry Ward, 1813 -1887 (J.B. Ford and Co, 1874)

Pleiocene fossils of South Carolina : containing descriptions and figures of the Polyparia, Echinodermata and Mollusca - Holmes, F. S. (Francis Simmons), 1815 -1882 (Russell & Jones, 1860)

The Pliocene deposits of Britain - Reid, Clement, 1853 -1916 (Printed for HMSO by Eyre and Spottiswoode, 1890)

A pocket list of British marine Mollusca - Bailey, George. (Tindall & co., printers, 1887)

Poirieria - Auckland Institute; Museum. Conchology Section. (Auckland Museum, Conchology Section, 1969)

Poirieria - Auckland Institute; Museum. Conchology Section. (Auckland Museum, Conchology Section, 1972)

Poirieria - Auckland Institute; Museum. Conchology Section. (Auckland Museum, Conchology Section, 1967)

Poirieria - Auckland Institute; Museum. Conchology Section. (Auckland Museum, Conchology Section, 1973)

Poirieria - Auckland Institute; Museum. Conchology Section. (Auckland Museum, Conchology Section, 1975)

Poirieria - Auckland Institute; Museum. Conchology Section. (Auckland Museum, Conchology Section, 1976)

Poirieria - Auckland Institute; Museum. Conchology Section. (Auckland Museum, Conchology Section, 1978)

Poirieria - Auckland Institute; Museum. Conchology Section. (Auckland Museum, Conchology Section, 1979)

Poirieria - Auckland Institute; Museum. Conchology Section. (Auckland Museum, Conchology Section, 1986)

Poirieria - Auckland Institute; Museum. Conchology Section. (Auckland Museum, Conchology Section, 2006)

Poirieria - Auckland Institute; Museum. Conchology Section. (Auckland Museum, Conchology Section, 2014)

Les poissons des côtes de Belgique : leurs parasites et leurs commensaux - Académie royale des sciences, des lettres et des beaux-arts de Belgique. (M. Hayez, Imprimeur de l'academie royale de Belgique, 1870)

"Pola" expedition: Mollusks. [5 works on mollusks resulting from investigations on voyages of the S.M. Schiff "Pola", 1890-1898] (K.K. Hof- und Staatsdruckerei, 1896)

The polar world a popular description of man and nature in the Arctic and Antarctic regions of the globe - Hartwig, G. (Georg), 1813 -1880 (Longmans, Green, 1892)

Political essay on the kingdom of New Spain containing researches relative to the geography of Mexico, the extent of its surface and its political division into intendancies, the physical aspect of the country, the population, the state of agriculture and manufacturing and commercial industry, the canals projected between the South Sea and Atlantic Ocean, the crown revenues, the quantity of the precious metals which have flowed from Mexico into Europe and Asia, since the discovery of the new continent and the military defence of New Spain - Humboldt, Alexander von, 1769 -1859 (Printed for Longman, Hurst, Rees, Orme and Brown ... and H. Colburn, 1811)

The Popular educator: a complete encyclopaedia of elementary, advanced and technical education (Cassell, 1888)

The popular encyclopedia; being a general dictionary of arts, sciences, literature, biography, history, and political economy, reprinted from the American edition of the "Conversations lexicon" ... with dissertations on the rise and progress of literature (Blackie, 1900)

A popular history of British sea-weeds, comprising their structure, fructification, specific characters, arrangement, and general distribution, with notices of some of the fresh-water Algae - Landsborough, D. (David), 1779 -1854 (Reeve and Benham, 1851)

A popular history of British sea-weeds ... with notices of some of the fresh-water Algae - Landsborough, D. (David), 1779 -1854 (Reeve, Benham and Reeve, 1849)

A popular history of British seaweeds : comprising their structure, fructification, specific characters, arrangement, and general distribution, with notices of some of the fresh-water algae - Landsborough, D. (David), 1779 -1854 (L. Reeve, 1857)

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

Porter-Walton : [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Porter-Walton Co, 1917)

Post-Pleiocene fossils of South-Carolina - Holmes, F. S. (Francis Simmons), 1815 -1882 (Russell & Jones, 1860)

Pottsville fauna of Ohio - Morningstar, Helen, 1891 - (1922)

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)

Precis Analytique des Travaux de l'Academie des Sciences, Belles-Lettres et Arts de Rouen - Académie des sciences, belles lettres & arts de Rouen (1830)

Precis Analytique des Travaux de l'Academie des Sciences, Belles-Lettres et Arts de Rouen - Académie des sciences, belles lettres & arts de Rouen (1845)

Precis Analytique des Travaux de l'Academie des Sciences, Belles-Lettres et Arts de Rouen - Académie des sciences, belles lettres & arts de Rouen (1851)

Prehistoric Europe : a geological sketch - Darwin, Charles, 1809 -1882 (Edward Stanford, 1881)

A preliminary catalogue of the shell-bearing marine mollusks and brachiopods of the southeastern coast of the United States, with illustrations of many of the species - Dall, William Healey, 1845 -1927 (Govt. Print. Off, 1903)

The primaeval world of Switzerland - Heer, Oswald, 1809 -1883 (Longmans, Green, 1876)

Primera reunión del Congreso científico latino americano celebrada en Buenos Aires del 10 al 20 de abril de 1898 por iniciativa de la Sociedad científica argentina... - Congreso Científico Latino Americano Buenos Aires, Argentina) 1898 - (Compañia sud-americana de billetes de banco, 1898)

The principal navigations, voyages, traffiques & discoveries of the English nation made by sea or over-land to the remote and farthest distant quarters of the earth at any time within the compasse of these 1600 yeeres - Hakluyt, Richard, 1552? -1616 (J. MacLehose and sons, 1904)

Proceedings - Dorset Natural History; Archaeological Society.

Proceedings and transactions of the Liverpool Biological Society - Liverpool Biological Society. (The Society, 1891)

Proceedings and transactions of the Liverpool Biological Society - Liverpool Biological Society. (The Society, 1900)

Proceedings and transactions of the Natural History Society of Glasgow - Natural History Society of Glasgow. (The Society, 1883)

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

Proceedings and transactions of the Natural History Society of Glasgow - Natural History Society of Glasgow. (The Society, 1892)

Proceedings - Dorset Natural History and Archaeological Society - Dorset Natural History; Archaeological Society. (1877)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1843)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1846)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1847)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1859)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1861)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1865)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1869)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1871)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1880)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1891)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1897)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1899)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1901)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1905)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1909)

Proceedings of the American Academy of Arts and Sciences - American Academy of Arts; Sciences. (Metcalf and Co, 1895)

Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge - American Philosophical Society. (American Philosophical Society, 1857)

Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge - American Philosophical Society. (American Philosophical Society, 1896)

Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge - American Philosophical Society. (American Philosophical Society, 1903)

Proceedings of the Bath Natural History and Antiquarian Field Club - Bath Natural History; Antiquarian Field Club. (1867)

Proceedings of the Bath Natural History and Antiquarian Field Club - Bath Natural History; Antiquarian Field Club. (1870)

Proceedings of the Bath Natural History and Antiquarian Field Club - Bath Natural History; Antiquarian Field Club. (1890)

Proceedings of the Boston Society of Natural History - Boston Society of Natural History. (Boston Society of Natural History, 1845)

Proceedings of the Boston Society of Natural History - Boston Society of Natural History. (Boston Society of Natural History, 1846)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1862)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1866)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1873)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1877)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1895)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1898)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1901)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1904)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1917)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1928)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1944)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1949)

Proceedings of the California Academy of Sciences. 3d ser, Geology - California Academy of Sciences (The Academy, 1902)

Proceedings of the California Academy of Sciences - California Academy of Sciences (California Academy of Sciences, 1895)

Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 1917)