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OpenStudy (anonymous):

Who developed the first effective vaccine against polio? (Points : 3) Norman Borlaug Marshall McLuhan Vladimir Zworykin Jonas Salk I have absolutly no idea o-o and... LAST ONE.

OpenStudy (anonymous):

@Juakikun

OpenStudy (juakikun):

D.

OpenStudy (anonymous):

Ty babe ^_^ <33 I'll let you now what i get o-o

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