The power of movement in plants - Darwin, Charles, 1809 -1882 (Appleton, 1881)

The power of movement in plants - Darwin, Charles, 1809 -1882 (D. Appleton, 1898)

Practical botany - Bergen, Joseph Y. (Joseph Young), 1851 -1917 (Ginn and company, 1911)

Practical botany for beginners - Bower, F. O. (Frederick Orpen), 1855 -1948 (1894)

Practical botany, structural and systematic, the latter portion being an analytical key to the wild flowering plants, trees, shrubs, ordinary herbs, sedges and grasses of the northern and middle United States east of the Mississippi - Koehler, August (H. Holt and Company, 1876)

A practical flora for schools and colleges - Willis, Oliver R. (Oliver Rivington), 1815 -1902 (American Book Co, 1894)

The practical home farmer, a popular guide for the farm and fireside - Munroe, F. L., (Union printing company, 1886)

Practical plant biochemistry - Onslow, Muriel Wheldale 1880 -1932 (University Press, 1923)

Practical plant biochemistry - Onslow, Muriel Wheldale 1880 -1932 (University press, 1920)

Practical plant biochemistry - Onslow, Muriel Wheldale 1880 -1932 (University Press, 1920)

Practical plant physiology : an introduction to original research for students and teachers of natural science, medicine, agriculture and forestry - Detmer, W. (Wilhelm), 1850 -1930 (Swan Sonnenschein, 1898)

Practical plant physiology : an introduction to original research for students and teachers of natural science, medicine, agriculture and forestry - Detmer, W. (Wilhelm), 1850 -1930 (S. Sonnenschein, 1898)

Practical veterinary pharmacology and therapeutics - Milks, Howard Jay, 1879 -1954 (The Macmillan company, 1917)

Practical veterinary pharmacology and therapeutics - Milks, Howard Jay, 1879 -1954 (The Macmillan Company, 1917)

Preliminary catalog of Anthophyta and Pteridophyta, reported as growing spontaneously within one hundred miles of New York City - Torrey Botanical Club. (1888)

Preliminary catalogue of Anthophyta and Pteridophyta, reported as growing spontaneously within one hundred miles of New York City - Torrey Botanical Club. (1888)

A preliminary catalogue of the flora of New Jersey - Britton, Nathaniel Lord, 1859 -1934 (Office of the Survey, 1881)

... A preliminary catalogue of the flora of New Jersey - Britton, Nathaniel Lord, 1859 -1934 (Office of the survey, 1881)

A preliminary list of Nicaraguan plant diseases - Stevenson, John A. (John Albert), 1890 -1979 (Plant Disease Epidemics and Identification Section, Agricultural Research Service, United States Department of Agriculture, 1957)

Preliminary report on the forest and other vegetation of Pegu - Kurz, Wilhelm Sulpiz, 1834 -1878 (C.B. Lewis, Baptist Mission Press, 1875)

Preliminary report on the forest and other vegetation of Pegu - Kurz, Wilhelm Sulpiz, 1834 -1878 (Lewis, 1875)

A preliminary verified list of plant collectors in Mexico - Knobloch, Irving W. (Irving William), 1907 - (Harold N. Moldenke and Alma L. Moldenke, 1983)

[Price list] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Mark W. Johnson Seed Co, 1894)

Primae lineae systematis naturæ : nexui naturali omnium evolutionique progressivae per nixus reascendentes superstructi - Gori͡aninov, Pavel Fedorovich, 1796 -1865 (Typis Karoli Krajanis, 1834)

Primeras noticias acerca de la vegetacio´n americana, suministradas por el almirante Colo´n y los inmediatos continuadores de las investigacionas dirigidas al conocimiento de las plantas, con un resumen de las expediciones bota´nicas de los espan oles - Colmeiro, Miguel, 1816 -1901 (Ateneo de Madrid, 1892)

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

Primitiae florae essequeboensis adjectis descriptionibus centum circiter stirpium novarum, observationibusque criticis - Meyer, G. F. W. (Georg Friedrich Wilhelm), 1782 -1856 (Sumptibus H. Dieterich, 1818)

Primitiae florae Portobellensis, sive, Enumeratio plantarum vascularium quas juxta oppidum Portobello in Isthmo Panamensi Americae Centralis, mense Aprili anno 1826, legit doct. Joh. Eman. Billberg - Beurling, Pehr Johan, 1800 -1866 (s.n, 1854)

The principles of rational agriculture applied to India and its staple products - Schrottky, Eugene C. (Times of India Office, 1876)

Problems of relative growth - Huxley, Julian, 1887 -1975 (L. MacVeagh, The Dial Press, 1932)

Proceedings - Essex Institute. (1856)

Proceedings - University of Illinois at Urbana-Champaign. College of Agricultural, Consumer; Environmental Sciences. (University of Illinois at Urbana-Champaign, College of Agricultural, Consumer and Environmental Sciences, University of Illinois Extension, 1999)

Proceedings : 20th Southern Forest Tree Improvement Conference, June 26-30, 1989 Charleston, South Carolina - Southern Forest Tree Improvement Committee. (Southern Forest Experiment Station, USDA Forest Service, 1989)

Proceedings and transactions of the British Entomological and Natural History Society - British Entomological; Natural History Society. (British Entomological and Natural History Society, 1970)

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

Proceedings and transactions of the Natural History Society of Glasgow - Natural History Society of Glasgow. (The Society, 1889)

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, 1916)

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, 1917)

Proceedings and transactions of the South London Entomological & Natural History Society - South London Entomological; Natural History Society (The Society, 1965)

Proceedings, International conference on plant breeding and hybridization, 1902, held in the rooms of the American Institute of the City of New York and in the Museum building of the New York Botanical Garden, September 30 and October 1 and 2 (1904)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1867)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1877)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1884)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1889)

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 Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1913)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1841)

Proceedings of the American Academy of Arts and Sciences - American Academy of Arts; Sciences. (Metcalf and Co, 1860)

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, 1881)

Proceedings of the American Academy of Arts and Sciences - American Academy of Arts; Sciences. (Metcalf and Co, 1885)

Proceedings of the American Academy of Arts and Sciences - American Academy of Arts; Sciences. (Metcalf and Co, 1886)

Proceedings of the American Academy of Arts and Sciences - American Academy of Arts; Sciences. (Metcalf and Co, 1888)

Proceedings of the American Academy of Arts and Sciences - American Academy of Arts; Sciences. (Metcalf and Co, 1892)

Proceedings of the American Academy of Arts and Sciences - American Academy of Arts; Sciences. (Metcalf and Co, 1902)

Proceedings of the annual convention of the society of American Florists - Society of American Florists; Ornamental Horticulturists. (Society of American Florists and Ornamental Horticulturalists, 1885)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1902)

Proceedings of the Boston Society of Natural History - Boston Society of Natural History. (Boston Society of Natural History, 1907)

Proceedings of the California Academy of Sciences - California Academy of Sciences (California Academy of Sciences, 1873)

Proceedings of the California Academy of Sciences - California Academy of Sciences (California Academy of Sciences, 1888)

Proceedings of the California Academy of Sciences - California Academy of Sciences (California Academy of Sciences, 1889)

Proceedings of the California Academy of Sciences - California Academy of Sciences (California Academy of Sciences, 1893)

Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 1911)

Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 1912)

Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 1907)

Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 1923)

Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 1924)

Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 1931)

Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 1953)

Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 1960)

Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 1979)

Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 1987)

Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 1985)

Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 2001)

Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 2000)

Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 2010)

Proceedings of the Davenport Academy of Natural Sciences - Davenport Academy of Natural Sciences. (Academy of Natural Sciences [etc.], 1901)

Proceedings of the Entomological Society of Washington - Entomological Society of Washington (Entomological Society of Washington, 1904)

Proceedings of the Entomological Society of Washington - Entomological Society of Washington (Entomological Society of Washington, 1911)