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Author
- Geological Survey (U.S.)43
- Richard, S. H.5
- McIntosh, Willard L.3
- Othberg, Kurt L.3
- Barker, Fred, 1928-1
- Bateman, Paul Charles, 1910-1
- Boehner, R. C.1
- Brooks, H. K. (Harold Kelly), 1924-1
- Commission for the Geological Map of the World1
- Cyprus. Tmēma Geōlogikēs Episkopēsēs.1
- Dixon, H. Roberta1
- Drewes, Harald, 1927-1
- Ecuador. Dirección General de Geología y Minas1
- Ente minerario sardo1
- Evans, James George, 1938-1
- Great Britain. Directorate of Overseas Surveys1
- Great Britain. Ordnance Survey1
- Hansen, Wallace R., 1920-1
- Hildebrand, R. S.1
- Hildreth, Carol T.1
