Pesticides documentation bulletin - National Agricultural Library (U.S.) (National Agricultural Library, U.S. Dept. of Agriculture, #c 1965-1969, 1965)

The Pfizer handbook of microbial metabolites - Miller, Max W. (Blakiston Division, McGraw-Hill, 1961)

Pflanzen-teratologie systematisch geordnet - Penzig, O. (Ottone), 1856 -1929 (A. Ciminago, 1894)

Pflanzenphysiologie; Versuche und Beobachtungen an böheren und niederen Pflanzen einschliesslich Bakteriologie und Hydrobiologie mit Planktonkunde - Kolkwitz, R. (Richard), 1873 -1956 (G. Fischer, 1922)

Pflanzenphysiologie. Versuche und beobachtungen an höheren und niederen pflanzen einschliesslich bakteriologie und hydrobiologie mit planktonkunde - Kolkwitz, R. (Richard), 1873 -1956 (G. Fischer, 1914)

Pflanzenschutz nach Monaten geordnet; eine Anleitung für Landwirte, Gärtner, Obstbaumzüchter &c - Hiltner, Lorenz (E. Ulmer, 1909)

Die Pflanzenwelt - Warburg, Otto, 1859 -1938 (Bibliographisches Institut, 1913)

Pharmaceutical bacteriology - Schneider, Albert, 1863 -1928 (P. Blakiston's Son & Co, 1920)

Pharmaceutical bacteriology - Schneider, Albert, 1863 -1928 (P. Blakiston's sons & co, 1920)

Pharmaceutical bacteriology - Schneider, Albert, 1863 -1928 (P. Blakiston's son, 1920)

Pharmaceutical journal and transactions - Pharmaceutical Society of Great Britain (J. & A. Churchill, 1870)

The Philippine journal of science - Philippines. National Science Development Board. (Bureau of Science, 1906)

The Philippine journal of science - Philippines. National Science Development Board. (Bureau of Science, 1918)

The Philippine journal of science - Philippines. National Science Development Board. (Bureau of Science, 1921)

Photoperiodism and related phenomena in plants and animals; proceedings - Withrow, Robert B. 1904 -1958 (1959)

PHS news - Pennsylvania Horticultural Society. (The Society, 1972)

Phycomyceten und Ascomyceten. Untersuchungen aus Brasilien - Möller, Alfred, 1860 -1922 (G. Fischer, 1901)

Phyllosticta leaf spot, fruit blotch, and canker of the apple : its etiology and control - Guba, Emil Frederick, 1897 - (University of Illinois Agricultural Experiment Station, 1925)

A physiological study of two strains of Fusarium in their casual relation to tuber rot and wilt of potato - Link, George K. K. (George Konrad Karl), 1888 - (The University of Chicago press, 1916)

Physiology of fungi - Cochrane, Vincent W. (Wiley, 1958)

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

Physis - Sociedad Argentina de Ciencias Naturales. (Asociación Argentina de Ciencias Naturales [etc.], 1918)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1975)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1976)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1978)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1981)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1985)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1988)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1997)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1998)

The Phytologist: a popular botanical miscellany - Newman, Edward, 1801 -1876 (John van Voorst, 1841)