Spurr, Stephen Hopkins. <br/><br/>
Photogrammetry and photo-interpretation :  with a section on applications to forestry. 

 - 2nd ed. / of Aerial photographs in forestry.  2nd ed. / of Aerial photographs in forestry. 
 - New York :  Ronald Press Co.,  [1960] 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Forest surveys.<br/>Photographic surveying.<br/>Aerial photography.