TY - RPRT TI - Ground-water resources and potential hydrologic effects of surface coal mining in the northern Powder River basin, southeastern Montana AU - Steven E. Slagle AU - Barney D. Lewis AU - Roger W. Lee PY - 1985 DO - 10.3133/wsp2239 UR - https://pubs.usgs.gov/publication/wsp2239 ID - wsp2239 ER -