TY  - RPRT
TI  - General geology and phosphate deposits of Concepcion del Oro district, Zacatecas, Mexico
AU  - Cleaves Lincoln Rogers
AU  - Zoltan de Cserna
AU  - Eugenio Tavera
AU  - Salvador Ulloa
PY  - 1956
DO  - 10.3133/b1037a
UR  - https://pubs.usgs.gov/publication/b1037A
ID  - b1037A
ER  -