Germ theory of disease definition of Germ theory of ... The germ theory of disease dominated public health science until the middle of the 20th century to the point that "the search for other than microbial causes of ... The Middle-Class Plague: - Health Heritage Research Services Epidemic Polio and the Canadian State 1936-1937 * By CHRISTOPHER J. RUTTY Ph.D. HEALTH HERITAGE RESEARCH SERVICES 96 Durie Street Toronto Ontario Canada M6S 3E9
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