TY  - RPRT
TI  - Map Showing Construction Materials and Nonmetallic Mineral Resources of South Dakota
AU  - Robert P. Bryson
AU  - E.C. Fischer
AU  - E.L. Fox
AU  - D. M. Larrabee
AU  - R. A. Weeks
PY  - 1947
DO  - 10.3133/mb12
UR  - https://pubs.usgs.gov/publication/mb12
ID  - mb12
ER  -