Author: HAGER, M.W. ET AL.
Title: Late Pliocene and Pleistocene history of the Donnelly Ranch vertebrate site, southeastern Colorado.
Description: 1974. Univ. Wyoming, Contributions to Geology, Special paper 2; 62 pp. 33 fig./phot. (incl. 3 fold-outs and 10 plts. with fossils. Orig. wrps. with faint libr. stamp, very good, 4to.

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