Sisam, John W. B. <br/><br/>
The use of aerial survey in forestry and agriculture / 
John W.B S isam. 
 - Oxford :  Imperial Forestry Bureau,  1947. 
 - 59 p. ;  25 cm. 
 - Imperial Agricultural Bereaux. Jont publication ;  no. 9. .
<br/><br/> Includes bibliographical references (p. 50-53). 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Photography--Aerial.<br/>Aeronautics in forestry.<br/>Aeronautics in agriculture.
<br/><br/><label>Dewey Class. No.: </label>630.6242