TY  - RPRT
TI  - Preliminary geologic map of the Grey Hill Spring Quadrangle, San Juan and McKinley counties, New Mexico
AU  - R. B. O'Sullivan
AU  - D. L. Weide
AU  - G. R. Scott
PY  - 1989
DO  - 10.3133/mf2069
UR  - https://pubs.usgs.gov/publication/mf2069
ID  - mf2069
ER  -