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By: Raikow, Robert J. - Polumbo, Phylllis Jo - Borecky, Stephen R.Type: ArticleIn: Annals of the Carnegie MuseumVolume: 49Series:Issue:Date: 1980-07-07Page Range: 131--152Publication Info: [Pittsburgh], Published by authority of the Board of Trustees of the Carnegie Institute, 1901-Subjects: