Carrell, D. M. <br/><br/>
Air photo-interpretation for soil mapping 

 - Harpenden:  Lawes Agricultural Trust,  1977. 
 - 85p.:  ill.;  29cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil surveys
<br/><br/><label>LC Class. No.: </label>IRA S599.C3