Ray, Richard G.  1920- <br/><br/>
Aerial photographs in geologic interpretation and mapping. 

 - Washington,  U.S. Govt. Print. Off.,  1960. 
 - vi, 230 p.  illus., maps, diagrs.  30 cm. 
<br/><br/>Bibliography: p. 224-227. 
<br/><br/><label>LCCN: </label>gs 61000194  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aerial photography.<br/>Photographic surveying.<br/>Geology--Maps.
<br/><br/><label>LC Class. No.: </label>QE75  / .P9 no. 373 
<br/><br/><label>Gov. Doc. Class. No.: </label>I 19.16:373