TY  - RPRT
TI  - Hydrogeochemistry of the upper part of the Fort Union group in the Gascoyne lignite strip-mining area, North Dakota
AU  - R. L. Houghton
AU  - Donald C. Thorstenson
AU  - Donald W. Fisher
AU  - G.H. Groenewold
PY  - 1987
DO  - 10.3133/pp1340
UR  - https://pubs.usgs.gov/publication/pp1340
ID  - pp1340
ER  -