Harrison, Harold Charles,  1907- <br/><br/>
An investigation of the reported occurrence of tin at Juniper Ridge, Oregon, 
by H. C. Harrison.  With geology by John Eliot Allen. 
 - [Portland]  1942. 
 - [56] p.  illus., maps.  28 cm. 
 - Oregon. State Dept. of Geology and Mineral Industries. Bulletin  no. 23 .
<br/><br/> Reproduced from type-written copy. 
<br/><br/>"References" at end of each chapter except the last. 
<br/><br/><label>LCCN: </label>gs 43000002  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Tin ores--Oregon.<br/>Tin ores--Analysis.
<br/><br/><label>LC Class. No.: </label>QE155  / .A3 no. 23 
<br/><br/><label>Dewey Class. No.: </label>553.45