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  1. Wisconsin bird-study bulletin.
    By: Barnett, Maud - Mitchell, I. N. - Mitchell, I. N., - Wisconsin.
    Publication info: [Madison, Wis.] :C.P. Cary, State Superintendent,1906.
    Contributed by: Harvard University, MCZ, Ernst Mayr Library
    BHL Collections: Ernst Mayr Library of the MCZ, Harvard University
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