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By: Frank, L G - Cooper, J EType: ArticleIn: Raptor researchVolume: 8Series:Issue: 1/2Date: 1974Page Range: 29--32Publication Info: Vermillion, S.D, Raptor Research Foundation, [1972-1986]Subjects:
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By: Frank, L G - Cooper, J EType: ArticleIn: Raptor researchVolume: 8Series:Issue: 1/2Date: 1974Page Range: 33--36Publication Info: Vermillion, S.D, Raptor Research Foundation, [1972-1986]Subjects:
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By: Cooper, J E - Frank, L GType: ArticleIn: Raptor researchVolume: 8Series:Issue: 1/2Date: 1974Page Range: 20--28Publication Info: Vermillion, S.D, Raptor Research Foundation, [1972-1986]Subjects: