Rock material resources of Clackamas, Columbia, Multnomah, and Washington Counties, Oregon
By: Jerry J. Gray, Garwood R. Allen, Gregory S. Mack ; in cooperation with Board of Directors, Columbia Region Association of Governments, Portland, Oregon.
Contributors: Allen, Garwood R., joint author.; Mack, Gregory S., joint author.; Columbia Region Association of Governments.
Series: Special paper -- State of Oregon, Department of Geology and Mineral Industries ; 3; Special paper (Oregon. Dept. of Geology and Mineral Industries) ;; 3.
Publisher: State of Oregon, Dept. of Geology and Mineral Industries
Published: 1978
Place of publication: Portland
Language: eng
Number of pages: 54
Subjects: Nonmetallic minerals -- Oregon.; Rocks -- Oregon.
Notes: Bibliography: p. 43-44.