Author
Fries, Carl, 1910-1965
2 results
United States. Interdepartmental Committee on Scientific and Cultural Cooperation
2 results
Universidad Nacional Autónoma de México. Instituto de Geología
2 results
Foshag, William F. (William Frederick), 1894-1956
1 results
Guiza, Reinaldo
1 results
Mexico. Dirección de Minas y Petróleo
1 results
Schmitter, Eduardo
1 results
Segerstrom, Kenneth, 1909-1992
1 results
Smith, Ward C., 1906-1998
1 results