TY  - RPRT
TI  - Photogeologic maps of the Elk Ridge 9, 13, and 16 quadrangles, San Juan County, Utah
AU  - Robert J. Hackman
PY  - 1952
DO  - 10.3133/ofr5261
UR  - https://pubs.usgs.gov/publication/ofr5261
ID  - ofr5261
ER  -