How old are fossils? Roy, Sharat Kumar, 1897-1962 creator Field Museum of Natural History. Department of Geology. contributor text book Chicago Field Museum Press 1927 1927
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ENG Pages also numbered 141-[152] at foot of pages. Fieldiana, Popular series, Geology, was published by Field Museum of Natural History, Dept. of Geology as Leaflet (no. 1-4, 1922-1923) and as Geology leaflet (no. 5-14, 1925-1933). The Leaflet series Datering Fossielen Fossils Paleontology 507.73 .I3, F5, no. 5 Geology leaflet (Field Museum of Natural History), no. 9 https://www.biodiversitylibrary.org/bibliography/42275 https://www.biodiversitylibrary.org/bibliography/5218 17783160 10.5962/bhl.title.5218 SMI