Rock material resources of Marion, Polk, Yamhill, and Linn counties, Oregon
By: by Jerry J. Gray and Allen H. Throop.
Contributors: Throop, Allen H.; Oregon. Dept. of Geology and Mineral Industries.
Series: Open-file report / Oregon, Dept. of Geology and Mineral Industries -- 0-81-7.; Open-file report (Oregon. Dept. of Geology and Mineral Industries) -- O-81-7.
Publisher: State of Oregon, Dept. of Geology and Mineral Industries
Published: 1981
Place of publication: Portland, Or
Language: eng
Number of pages: 47
Subjects: Clay -- Oregon.; Shale -- Oregon.; Sand -- Oregon.; Gravel -- Oregon.; Volcanic ash, tuff, etc. -- Oregon.
Notes: Title from cover.

Text with accompanying maps in envelope.

OR GM.4Op2:0-81-7.

Bibliography: p. 40-41.