Ray R G <br/><br/>
Aerial photographs in geology interpretation and mapping 
Ray R G 
 - Washington  United States          1960 
 - vi, 230p.  cm. 
 - Geological survey professional paper; 373 .
<br/><br/><label>Standard No.: </label>45139 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology
<br/><br/><label>Dewey Class. No.: </label>H0bM95, K0