Smith, Theobald, 1859-1934 Parasitism and disease / Theobald Smith. - New York : Hafner Pub. Co. , 1963. - 196 p. ; 24 cm. Subjects--Topical Terms: Medical Parasitology--causes and theories of causation------Diseases --causes and theories of causation------ National Library of Medicine Call No.: QZ 85 / Sm67p