Geology of the Salem Hills and the North Santiam River basin, Oregon,
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.
gs 40000035
Geology--Oregon--Salem Hills.
Geology--Oregon--North Santiam River and Valley.
QE155 / .A3 no. 15
285 s B no. 15
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.
gs 40000035
Geology--Oregon--Salem Hills.
Geology--Oregon--North Santiam River and Valley.
QE155 / .A3 no. 15
285 s B no. 15