TY  - RPRT
TI  - Preliminary geologic map of Rival no.1 quadrangle, North Dakota
AU  - R. C. Townsend
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1951
DO  - 10.3133/ofr51202
UR  - https://pubs.usgs.gov/publication/ofr51202
ID  - ofr51202
ER  -