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Oliver P. Hay

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Stand Alone

The Pleistocene of the Middle Region of North America and Its Vertebrated Animals
Bibliography and Catalogue of the Fossil Vertebrata of North America
The Recognition of Pleistocene Faunas (Classic Reprint)
The Recognition Of Pleistocene Faunas
The Recognition Of Pleistocene Faunas
The Recognition Of Pleistocene Faunas
The Recognition of Pleistocene Faunas (Classic Reprint)