Ray, Richard G. <br/><br/>
Aerial photographs in geologic interpretation and mapping 

 - Washington :  U. S. Govt. Print. Off.,  1960 
 - vi, 230 p 
 - United States. Geological Survey. Professional paper ;  no. 373 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aerial photography in geology
<br/><br/><label>LC Class. No.: </label>QE75 P9 no. 373