TY  - RPRT
TI  - Economic resources of the northern Black Hills
AU  - J.D. Irving
AU  - S. F. Emmons
AU  - T.A. Jaggar
PY  - 1904
DO  - 10.3133/pp26
UR  - https://pubs.usgs.gov/publication/pp26
ID  - pp26
ER  -