TY - RPRT TI - Digital geologic map of the Butler Peak 7.5' quadrangle, San Bernardino County, California AU - Fred K. Miller AU - Jonathan C. Matti AU - Howard J. Brown AU - Digital preparation by P. M. Cossette PY - 2000 DO - 10.3133/ofr00145 UR - https://pubs.usgs.gov/publication/ofr00145 ID - ofr00145 ER -