Mineral resources: potentials and problems
By: by Walden P. Pratt and Donald A. Brobst.
Contributors: Brobst, Donald Albert, 1925- joint author.
Series: Geological Survey circular 698; Geological Survey circular ;; 698.
Publisher: U.S. Geological Survey]
Published: 1974
Place of publication: [Reston, Va
Language: eng
Number of pages: 20
Subjects: Mines and mineral resources -- United States.
Notes: Bibliography: p. 19-20.