Parasitology (Cambridge University Press, 1922)

Parasitology (Cambridge University Press, 1920)

Parasitology (Cambridge University Press, 1918)

Parasitology (Cambridge University Press, 1921)

Part second of A series of elementary lectures on the veterinary art wherein the anatomy, physiology and pathology of the horse, are essayed on the general principles of medical science - Percivall, William, 1793 -1854 (Longman, Hurst, Rees, Orme, Brown & Green, 1824)

Pathologie interne - Cadéac, Célestin, 1858 -1952 (J.B. Baillière, 1909)

Pathology and therapeutics of the domestic animals - Fröhner, Eugen, 1858 -1940 (W. L. Zuill, 1895)

Patterns and problems of development - Child, Charles Manning, 1869 -1954 (The University of Chicago Press, 1941)

Periódico zoológico - Sociedad Entomológica Argentina. (Sociedad Entomica Argentina, 1874)

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