Pathogenic micro-organisms. A text-book of microbiology for physicians and students of medicine. (Based upon Williams' Bacteriology) - MacNeal, Ward J., 1881 -1946 (P. Blakiston's Son & Co, 1920)

Pathogenic micro-organisms, including bacteria and Protozoa; a practical manual for students, physicians and health officers - Park, William Hallock, 1863 -1939 (Lea brothers & co, 1905)

Pathogenic micro-organisms : including bacteria and Protozoa; a practical manual for students, physicians and health officers - Park, William Hallock, 1863 -1939 (Kimpton, 1908)

Pathogenic micro-organisms; a text-book of microbiology for physicians and students of medicine - MacNeal, Ward J., 1881 -1946 (P. Blakiston's son & co, 1914)

Pathological mycology; an enquiry into the etiology of infective diseases, section 1. Methods - Hare, Arthur W. (Pentland, 1885)

Pathological mycology; an enquiry into the etiology of infective diseases - Hare, Arthur W. (Young J. Pentland, 1885)

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Pearls & parasites - Shipley, A. E. Sir, (Arthur Everett), 1861 -1927 (Murray, 1908)

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Pflanzenphysiologie; ein Handbuch der Lehre vom Stoffwechsels und Kraftwechsels in der Pflanze - Pfeffer, W. (Wilhelm), 1845 -1920 (W. Engelmann, 1897)

Phanerogamen- und Gefässkryptogamenflora der Umgegend von Nürnberg-Erlangen und des Angrenzenden Teiles des Fränkischen Jura um Freistadt, Neumarkt, Hersbruck, Muggendorf, Hollfeld - Schwarz, August Friedrich, 1852 -1915 (U. E. Sebald, 1892)

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

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

Pharmaceutical bacteriology, with special reference to disinfection and sterilization - Schneider, Albert, 1863 -1928 (Blakiston, 1912)

Pharmaceutical bacteriology, with special reference to disinfection and sterilization - Schneider, Albert, 1863 -1928 (P. Blakiston's son & co, 1912)

Pharmaceutical botany - Youngken, Heber W. (Heber Wilkinson), 1885 -1963 (P. Blakiston's Son & Co, 1918)

Pharmaceutical botany; a text-book for students of pharmacy and science - Youngken, Heber W. (Heber Wilkinson), 1885 -1963 (P. Blakiston's son & co, 1920)

Pharmaceutical botany, with glossary of botanical terms - Youngken, Heber W. (Heber Wilkinson), 1885 -1963 (Blakiston, 1921)

Pharmaceutical journal and transactions - Pharmaceutical Society of Great Britain. (J. & A. Churchill, 1880)

Pharmaceutical journal and transactions - Pharmaceutical Society of Great Britain. (J. & A. Churchill, 1883)

Pharmaceutical journal and transactions - Pharmaceutical Society of Great Britain. (J. & A. Churchill, 1881)

The Philippine journal of science - Philippines. National Science Development Board. (Bureau of Science, 1908)

The Philippine journal of science - Philippines. National Science Development Board. (Bureau of Science, 1909)

Philosophical transactions. Series A: Mathematical and physical sciences - Royal Society (Great Britain) (1887)

Photo-micrography : including a description of the wet collodion and gelatino-bromide processes : with the best methods of mounting and preparing microscopic objects for photo-micrography - Malley, A. Cowley (H. K. Lewis, 1885)

Physiological and pathological researches; being a reprint of the principal scientific writings of the late T. R. Lewis. In memoriam - Aitken, William, 1825 -1892 (Lewis Memorial Committee, 1888)

Physiologie - Richet, Charles Robert, 1850 -1935 (Alcan, 1893)

Physiology from the laboratory - Brown, Bertha Millard, 1870 - (Ginn & company, 1900)

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