Wheeler, J. L. <br/><br/>
Some effects of gangmoving and nitrogenous fertilizer on a ryegrass/ white-clover ley  /    
J. L. Wheeler. 
 - Kent :   Wye College,   [n.d]. 
 - v.  ;    25 cm. 
 - Reprint No. 164   .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nitrogen fertilizers--------