TY - RPRT TI - Preliminary geologic map of the Gregerson Basin Quadrangle, Lincoln County, Nevada AU - R. B. Scott AU - W. C. Swadley AU - W. R. Page AU - S.W. Novak PY - 1990 DO - 10.3133/ofr90646 UR - https://pubs.usgs.gov/publication/ofr90646 ID - ofr90646 ER -