TY  - RPRT
TI  - Estimated areas and volumes of sedimentary rock in the United States by province; statistical background data for U.S. Geological Survey Circular 860
AU  - K. L. Varnes
AU  - G.L. Dolton
PY  - 1982
DO  - 10.3133/ofr82666c
UR  - https://pubs.usgs.gov/publication/ofr82666C
ID  - ofr82666C
ER  -