TY  - RPRT
TI  - Water-quality data-collection activities in Colorado and Ohio; Phase III, evaluation of existing data for use in assessing regional water-quality conditions and trends
AU  - J. Michael Norris
AU  - Janet Hren
AU  - Donna N. Myers
AU  - Thomas H. Chaney
AU  - Carolyn J. Oblinger Childress
PY  - 1990
DO  - 10.3133/ofr89391
UR  - https://pubs.usgs.gov/publication/ofr89391
ID  - ofr89391
ER  -