Donaldson, Graham Francis <br/><br/>
Optimum harvesting systems for cereals :   an assesment for South-E ast England /  
G. F. Donaldson. 
 - Ashford :   Wye College, School of Rural Economics and Related Stud ies,   1970. 
 - 92 p. :    ill. ;    22 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Grain --Harvesting.--England ----<br/>Costs --Harvesting Machinery.--England ----
<br/><br/><label>Dewey Class. No.: </label>338.16 DON