The possibilities of oil in eastern Pennington County,
Ward, Freeman, 1879-
The possibilities of oil in eastern Pennington County, by Freeman Ward. - Vermillion, University of South Dakota, 1921. - 11 p. illus.
Bulletin, University of South Dakota, ser. XXI, no. 7. October, 1921.
gs 21000444
Petroleum--South Dakota.
TN872.S8 / W3
The possibilities of oil in eastern Pennington County, by Freeman Ward. - Vermillion, University of South Dakota, 1921. - 11 p. illus.
Bulletin, University of South Dakota, ser. XXI, no. 7. October, 1921.
gs 21000444
Petroleum--South Dakota.
TN872.S8 / W3