TY - RPRT TI - Mineral resources of the Beartooth Primitive Area and vicinity, Carbon, Park, Stillwater, and Sweet Grass Counties, Montana, and Park County, Wyoming, with a section on interpretation of aeromagnetic data AU - Frank S. Simons AU - T.J. Armbrustmacher AU - R. M. Van Noy AU - N. T. Zilka AU - F. E. Federspiel AU - James Ridenour AU - L. A. Anderson PY - 1979 DO - 10.3133/b1391f UR - https://pubs.usgs.gov/publication/b1391F ID - b1391F ER -