Reference | {Deposit:: PETSCH, BRUNO C., 1955 , GOVERT QUAD, SOUTH DAKOTA GEOLOGICAL SURVEY}{Deposit:: GILL, JAMES R. AND MOORE, GEORGE W., 1955 , CARNOTITE-BEARING SANDSTONE IN CEDAR CANYON, SLIM BUTTES, HARDING COUNTY, SOUTH DAKOTA, USGS BULLETIN 1009 - I} |