Ellis, R. H. (1994). The case books of Dr. John Snow. The Wellcome Trust Centre for the History of Medicine.
Chicago Stili AlıntıEllis, R. H. The Case Books of Dr. John Snow. The Wellcome Trust Centre for the History of Medicine, 1994.
MLA AlıntıEllis, R. H. The Case Books of Dr. John Snow. The Wellcome Trust Centre for the History of Medicine, 1994.
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