TY  - RPRT
TI  - Utilization of mull (forest humus layer) in geochemical exploration in the Empire district, Clear Creek County, Colorado
AU  - Gary C. Curtin
AU  - H. W. Lakin
AU  - A.E. Hubert
AU  - E. L. Mosier
AU  - K. C. Watts
PY  - 1971
DO  - 10.3133/b1278b
UR  - https://pubs.usgs.gov/publication/b1278B
ID  - b1278B
ER  -