TY  - RPRT
TI  - Mineral deposits of Central America, with a section on manganese deposits of Panama
AU  - Ralph Jackson Roberts
AU  - Earl Montgomery Irving
AU  - F. S. Simons
PY  - 1957
DO  - 10.3133/b1034
UR  - https://pubs.usgs.gov/publication/b1034
ID  - b1034
ER  -