TY  - RPRT
TI  - Water Resources Data for Colorado, 1968; Part 2: Water quality records
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1969
DO  - 10.3133/wdrco682
UR  - https://pubs.usgs.gov/publication/wdrCO682
ID  - wdrCO682
ER  -