Thayer, Thomas Prence,  1907- <br/><br/>
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 .
<br/><br/> Photoprinted.  Errata slip inserted. 
<br/><br/>Bibliographical foot-notes. 
<br/><br/><label>LCCN: </label>gs 40000035  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--Oregon--Salem Hills.<br/>Geology--Oregon--North Santiam River and Valley.
<br/><br/><label>LC Class. No.: </label>QE155  / .A3 no. 15 
<br/><br/><label>Dewey Class. No.: </label>285 s  B no. 15