TY  - RPRT
TI  - Head fluctuations in artesian wells in the northern Black Hills, South Dakota
AU  - D. G. Adolphson
AU  - E. F. LeRoux
PY  - 1971
DO  - 10.3133/ofr711
UR  - https://pubs.usgs.gov/publication/ofr711
ID  - ofr711
ER  -