Medical protozoology: a brief, informal history.
Kean
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D001938:Brazil; D005060:Europe; D049670:History, 17th Century; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D008829:Microbiology / Q000266:history*; D011528:Protozoan Infections / Q000266:history*; D012425:Russia (Pre-1917); D014481:United States