TY  - RPRT
TI  - The Niobrara Formation as a challenge to water quality in the Arkansas River, Colorado, USA
AU  - Carleton R. Bern
AU  - Stogner
PY  - 2017
DO  - 10.1016/j.ejrh.2017.05.001
UR  - https://pubs.usgs.gov/publication/70188789
ID  - 70188789
ER  -