TY  - RPRT
TI  - Reconnaissance map showing locations of possible sources of riprap in western North Dakota and in northwestern South Dakota
AU  - P.E. Truesdell
AU  - G.S. Hilton
PY  - 1947
DO  - 10.3133/mb20
UR  - https://pubs.usgs.gov/publication/mb20
ID  - mb20
ER  -