PREVIOUS
NEXT
Author
- Geological Survey (U.S.)1,943
- Geological Survey of Canada212
- American Geographical Society of New York103
- Hackman, Robert J.36
- Canada. Bureau of Geology and Topography34
- Marshall, C. H.30
- Darton, Nelson Horatio, 1865-194825
- Detterman, J. S.25
- Geological Survey (South Africa)20
- Brazil. Divisão de Fomento da Produção Mineral19
- Moore, Samuel L.19
- Norris, Donald Kring, 1924-19
- Miller, Todd S.18
- Snyder, George L. (George Leonard), 1927-18
- Newfoundland. Mineral Development Division17
- Dibblee, T. W. (Thomas Wilson), 1911-16
- Roehler, Henry W.16
- Thaden, Robert E., 1924-16
- Hayes, C. W. (Charles Willard), 1859-191615
- Johnson, William D., Jr.15
