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By: Welsch, Robert Louis,Type: ArticleIn: Field Museum of Natural History bulletinVolume: 59Series:Issue: 8Date: 1988Page Range: 9--15Publication Info: [Chicago, Ill.], The Museum, [1972]-©1990Subjects:
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By: Welsch, Robert Louis,Type: ArticleIn: Field Museum of Natural History bulletinVolume: 59Series:Issue: 4Date: 1988Page Range: 13--22Publication Info: [Chicago, Ill.], The Museum, [1972]-©1990Subjects: