The physiology of plants; a treatise upon the metabolism and sources of energy in plants - Pfeffer, W. (Wilhelm), 1845 -1920 (Clarendon press, 1900)

Physiology of the fungi - Lilly, Virgil Greene. (McGraw-Hill, 1951)

Phytohormones - Thimann, Kenneth Vivian, 1904 -1997 (The Macmillan Company, 1937)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1995)

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

Die pilze, eine einführung in die kenntnis ihrer formenreihen ... - Lindau, Gustav, 1866 -1923 (G. F. Göschen, 1912)

Die pilze in morphologischer, physiologischer, biologischer und systematischer beziehung - Zopf, W. (Wilhelm), 1846 -1909 (E. Trewendt, 1890)

The plant cell wall; a topical study of architecture, dynamics, comparative chemistry and technology in a biological system - Siegel, S. M. (Sanford Marvin), 1928 - (Pergamon Press, 1962)

Plant genetics - Coulter, John Merle, 1851 -1928 (The University of Chicago Press, 1918)

Plant genetics - Coulter, John Merle, 1851 -1928 (University of Chicago Press, 1918)

Plant growth regulation - Boyce Thompson Institute for Plant Research. (Iowa State University Press, 1961)

Plant growth substances - University of Wisconsin. (University of Wisconsin Press, 1951)

Plant growth-substances; their chemistry and applications, with special reference to synthetics - Nicol, Hugh, 1898 - (Chemical publishing company, inc, 1941)

Plant morphogenesis - Sinnott, Edmund W. (Edmund Ware), 1888 -1958 (McGraw-Hill, 1960)

Plant physiology; authorized English translation by R. J. HarveyGibson; supplement incorporating the alterations of the 2d ed. of the German original - Harvey-Gibson, R. J. (Robert John), 1860 -1929 (Clarendon Press, 1913)

The Plant world - Plant World Association. (Plant World Association [etc.], 1914)

Les plantes - Faideau, Ferdinand, 1862 -1930? (Larousse, 1922)

Popular Science Review (1878)

Populäre biologische Vorträge - Molisch, Hans, 1856 -1937 (G. Fischer, 1922)

Practical physiology of plants - Darwin, Francis, Sir, 1848 -1925 (University Press, 1894)

Practical physiology of plants - Darwin, Francis, Sir, 1848 -1925 (University press, 1901)

Practical physiology of plants - Darwin, Francis, Sir, 1848 -1925 (University Press, 1907)

Practical physiology of plants - Darwin, Francis, Sir, 1848 -1925 (University Press, 1895)

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 text-book of plant physiology - MacDougal, Daniel Trembly, 1865 -1958 (Longmans, Green, and Co, 1901)

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

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

Proceedings. 5th Biology Conference "Oholo" 1960 - Grossowicz, Nathan. (Elsevier Pub. Co, 1961)

Proceedings of the American Academy of Arts and Sciences - American Academy of Arts; Sciences. (Metcalf and Co, 1904)

Proceedings of the Indiana Academy of Science - Indiana Academy of Science. ([s.n.], 1911)

Proceedings of the Royal Society of Victoria. New series - Royal Society of Victoria (Melbourne, Vic.) (Stillwell and Co, 1943)

Proceedings of the Royal Society of Victoria. New series - Royal Society of Victoria (Melbourne, Vic.) (Stillwell and Co, 1945)

Proceedings of the section of sciences - Koninklijke Akademie van Wetenschappen (Netherlands) (Johannes Müller, 1913)

Proceedings of the section of sciences - Koninklijke Akademie van Wetenschappen (Netherlands) (Johannes Müller, 1914)

Proceedings of the section of sciences - Koninklijke Akademie van Wetenschappen (Netherlands) (Johannes Müller, 1920)

Proceedings of the section of sciences - Koninklijke Akademie van Wetenschappen (Netherlands) (Johannes Müller, 1922)

Proceedings of the section of sciences - Koninklijke Akademie van Wetenschappen (Netherlands) (Johannes Müller, 1923)

Proceedings of the Seventeenth annual convention of the Association of American Agricultural Colleges and Experiment Stations held at Washington, D.C., November 17-19, 1903 - United States. Office of Experiment Stations. (U.S. Dept. of Agriculture, Office of Experiment Stations, 1904)

Prodrome de la flore Belge - De Wildeman, Emile 1866 -1947 (Alfred Castaigne, 1898)