A skeleton of Astrapotherium Riggs, Elmer S., 1869-1963 creator text book Chicago Field Museum of Natural History 1935 1935
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ENG Caption title. "October 30, 1935." Fieldiana series has been published as Geological Series by Field Columbian Museum (1895-1909) and Field Museum of Natural History (1909-1943), and as Fieldiana: Geology by Chicago Natural History Museum (1945-1966) and Field Museum of Natural History (1966-). Astropotherium QE1 .F4 v.6, no.2-13 Publication (Field Museum of Natural History : 1909), 348 Publication (Field Museum of Natural History : 1909), Geological series, v. 6, no. 13 https://www.biodiversitylibrary.org/bibliography/42259 https://www.biodiversitylibrary.org/bibliography/5331 4445707 cd38000185 10.5962/bhl.title.5331 AZN