Ridge, John Drew, 1909-  Ridge, John Drew, 1909- <br/><br/>
Selected bibliographies of hydrothermal and magnetic mineral deposits. 

 - [New York] :  Geological Society of America,  [1961] 
 - The Geological Society of America. Memoir ;  75 .
 - Memoir (Geological Society of America) ;  75 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology, Economic -- Bibliography.--Geology, Economic -- Bibliography.<br/>Ore deposits -- Bibliography.--Ore deposits -- Bibliography.