Kilford, W. K. (William Kenneth) <br/><br/>
Elementary air survey / 
by W. K. Kilford 
 - London :  Sir Isaac Pitman & Sons Ltd.,  1963 
 - 290 p. :  ill. ;  23 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aerial photogrammetry