01070cam a22003251 4500 gs 40000035 DLC 20260227111345.0 780808s1939 oruab b s000 0 eng c gs 40000035 (OCoLC)4120078 U. S. Geol. Survey. Libr. NcRS NcRS DLC premarc n-us-or x3x3 QE155 .A3 no. 15 285 s B no. 15 Thayer, Thomas Prence, 1907- Geology of the Salem Hills and the North Santiam River basin, Oregon, by Thomas P. Thayer. Portland, Ore., 1939. 40 p. illus., map. 28 cm. Oregon. Dept. of Geology and Mineral Industries. Bulletin no. 15 Photoprinted. Errata slip inserted. Bibliographical foot-notes. Geology Oregon Salem Hills. Geology Oregon North Santiam River and Valley. Salem Hills, Geology of the. North Santiam River basin, Oregon. 27609 27609