TY  - RPRT
TI  - Field trip guide: 18th Ground-water Short Course, U.S. Geological Survey, Ground Water Branch, Glenwood Springs, Colorado, September 1959
AU  - Stanley William Lohman
PY  - 1959
DO  - 10.3133/1727
UR  - https://pubs.usgs.gov/publication/1727
ID  - 1727
ER  -