TY  - RPRT
TI  - Reconnaissance map showing relative amounts of soil and bedrock in the mountainous part of the Boulder Quadrangle, Boulder County, Colorado
AU  - P. W. Schmidt
AU  - K. L. Pierce
PY  - 1978
DO  - 10.3133/mf993
UR  - https://pubs.usgs.gov/publication/mf993
ID  - mf993
ER  -