Discusses the history of the poliovirus, its effects on the body, vaccines and the researchers who discovered them, and the threat that this virus still poses. Additional Details \N BOOK TYPE : JN BRAND : Hecht, Alan GRADE LEVEL : 10-12 LANGUAGE : ENGLISH NUMBER OF PAGES : 116 PUBLISH DATE : 2009/01/01 PUBLISHER IMPRINT CODE : CHELS PUBLISHER NAME : FACTS ON FILE RETURNS ACCEPTED? : YES
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