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By "Pearson, Helga Sharpe, 1898-"
Books/Journals (1)
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Some skulls of Perchoerus (Thinohyus) from the White River and John Day formations. Bulletin of the AMNH ; v. 48, article 3
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By: Pearson, Helga Sharpe,
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Publication info: 1923
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Holding Institution: American Museum of Natural History Library
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