Hart, Cecil Augustus. <br/><br/>
Air survey / 
Cecil Augustus Hart. 
 - London :  Royal Geographical Society,  1948. 
 - 14 p. :  ill. ;  22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Photographic surveying.
<br/><br/><label>Dewey Class. No.: </label>P 526.91 H37