TY  - RPRT
TI  - Coal resource occurrence map of the Piedra de la Aguila quadrangle, McKinley County, New Mexico
AU  - Berge Exploration Inc.
PY  - 1979
DO  - 10.3133/ofr791039
UR  - https://pubs.usgs.gov/publication/ofr791039
ID  - ofr791039
ER  -