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By: Fitzner, Richard E.Type: ArticleIn: Raptor researchVolume: 9Series:Issue: 3/4Date: 1975Page Range: 55--57Publication Info: Vermillion, S.D, Raptor Research Foundation, [1972-1986]Subjects:
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By: Fitzner, Richard E. - Rogers, L E - Riddell, J. A.Type: ArticleIn: Raptor researchVolume: 11Series:Issue: 3Date: 1977Page Range: 67--71Publication Info: Vermillion, S.D, Raptor Research Foundation, [1972-1986]Subjects: