The swine influenza program. 1977.
Evans
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D049673:History, 20th Century; D006801:Humans; D017589:Immunization Programs / Q000266:history* / Q000592:standards; D007252:Influenza Vaccines / Q000266:history; D007251:Influenza, Human / Q000266:history* / Q000517:prevention & control; D014481:United States / Q000453:epidemiology
D007252:Influenza Vaccines