TY  - RPRT
TI  - Chemical analyses of coal from the Mesa Verde Formation, Grand Mesa coal field, Delta and Mesa counties, Colorado
AU  - Ronald H. Affolter
AU  - George P. Eager
AU  - Joseph R. Hatch
PY  - 1980
DO  - 10.3133/ofr80980
UR  - https://pubs.usgs.gov/publication/ofr80980
ID  - ofr80980
ER  -