TY  - RPRT
TI  - Phosphate investigations in Colombia, 1969 a progress report; with a note on the aluminous laterite deposits of the Department of Cauca
AU  - James Bachelder Cathcart
PY  - 1971
DO  - 10.3133/ofr7165
UR  - https://pubs.usgs.gov/publication/ofr7165
ID  - ofr7165
ER  -