TY  - RPRT
TI  - Catalog of selected offices of the Office of Surface Mining, Bureau of Land Management, and Geological Survey relating to coal, 1981
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1980
DO  - 10.3133/cir840
UR  - https://pubs.usgs.gov/publication/cir840
ID  - cir840
ER  -