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2Iowa Ornithologists' Union, Quarterly field report, and Council Bluffs field notes, winter 1974-1975by Iowa Ornithologists' Union; Petersen, Peter C.; Wigg, Melba“...Iowa Ornithologists' Union, Quarterly field report, winter 1974-1975, was a corrected galley...”
Published 1974
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3by Crocker, Edwin G.“... for the Iowa Ornithologists Union Quarterly field report of winter 1979-1980....”
Published 1980
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