Author
Brazil. Departamento Nacional da Produção Mineral
United States. Agency for International Development
12 results
Geological Survey (U.S.)
4 results
Simmons, George Clarke, 1923-
4 results
United States. International Cooperation Administration
4 results
Dorr, John Van N. (John Van Nostrand), 1910-
3 results
Herz, Norman, 1923-
3 results
Barbosa, Aluizio Licinio de Miranda
2 results
Gair, Jacob Eugene, 1922-
2 results
Johnson, Robert F., 1916-
2 results
Jones, Fred O. (Fred Oscar), 1912-
2 results
Maxwell, Charles H. (Charles Henry), 1923-
2 results
Moore, Samuel L.
2 results
Pomerene, Joel B.
2 results
Reeves, Robert G. (Robert Grier), 1920-
2 results
Wallace, Roberts M. (Roberts Manning), 1915-
2 results
Brazil. Departamento Nacional de Aguas e Energia Elétrica
1 results
Companhia de Pesquisa de Recursos Minerais
1 results
Drake, Avery Ala, 1927-
1 results
Giusti, Ennio V.
1 results
Morgan, Benjamin A.
1 results