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Start Over Formats Still image ✖Remove constraint Formats: Still image Subjects Influenza in Birds -- prevention & control ✖Remove constraint Subjects: Influenza in Birds -- prevention & control Authors Armstrong, Robert E., 1948-2008 ✖Remove constraint Authors: Armstrong, Robert E., 1948-2008 Languages English ✖Remove constraint Languages: English Genre Posters ✖Remove constraint Genre: Posters

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