TY - RPRT TI - Digital data sets for map products produced as part of the Black Hills Hydrology Study, western South Dakota AU - Joyce E. Williamson AU - Gregory J. Jarrell AU - Rick M. Clawges AU - Joel M. Galloway AU - Janet M. Carter PY - 2000 DO - 10.3133/ofr00471 UR - https://pubs.usgs.gov/publication/ofr00471 ID - ofr00471 ER -