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2by Iowa Ornithologists' Union; Fuller, James L.Contributors: “...Knight, Bernie; Knight, Calvin A....”
Published 1993
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3by Iowa Ornithologists' Union; Fuller, James L.Contributors: “...Knight, Bernie; Knight, Calvin A....”
Published 1993
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4by Newlon, Michael C.Contributors: “...Knight, Bernie; Knight, Calvin A.; Newlon, Carol S....”
Published 1976
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5by Kent, Thomas H. (Thomas Hugh), 1934-Contributors: “...Knight, Bernie; Knight, Calvin A.; Newlon, Michael C.; Shires, Thomas K....”
Published 1981
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6by Newlon, Michael C.Contributors: “...Knight, Bernie; Knight, Calvin A.; Nelson, Weir; Newlon, Michael C.; Newlon, Carol S....”
Published 1979
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7by Newlon, Michael C.Contributors: “...Kent, Thomas H. (Thomas Hugh), 1934-; Knight, Bernie; Knight, Calvin A.; Maish, James; Shires...”
Published 1981
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8by Fuller, James LContributors: “...; Knight, Calvin A.; Pinkston, Randall; Scheib, James; Boggess, Becky; Boggess, Tom...”
Published 1991
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