Author
Freire de Andrade, Alfredo Augusto, 1859-1929
1
Geological Survey of India
1
Geological Survey of Nigeria
1
Instituto Geográfico e Geológico (São Paulo, Brazil)
1
Mezzalira, Sérgio
1
Rugg, William, d. 1550
1
South Dakota School of Mines and Technology
1
South Dakota State School of Mines
1
Wohlers, Armando
1