Crop productivity. 

 - Oxford :  Butterworth-Heinemann,  1994. 
 - x, 282 p. :  ill. ;  25 cm. 
 - Biotechnology by Open Learning .
 - Biotechnology by Open Learning (Series) .
<br/><br/> Published on behalf of open unversiteit  and Unversity of Greenwich (formerly Thames Polytechinc). 
<br/><br/>Includes bibliographical references (p. 279-281) and index. 
<br/><br/><label>ISBN: </label>0750605626 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural productivity--Programmed instruction.<br/>Crop yields--Programmed instruction.
<br/><br/><label>LC Class. No.: </label>S494.5.P75  / C75 1994