TY - RPRT TI - Principal facts for a gravity survey of the Fly Ranch Extension Known Geothermal Resource Area, Pershing County, Nevada AU - Donald L. Peterson AU - Harold E. Kaufmann PY - 1978 DO - 10.3133/ofr78107c UR - https://pubs.usgs.gov/publication/ofr78107C ID - ofr78107C ER -