TY  - RPRT
TI  - Water Resources Data for Colorado, 1969; Part 2. Water Quality Records
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1971
DO  - 10.3133/wdrco692
UR  - https://pubs.usgs.gov/publication/wdrCO692
ID  - wdrCO692
ER  -