Colwell, J.D <br/><br/>
Estimating fertilizer requirements  a quantitative approach 

 - U.K.  CAB International  1994 
 - 262 p. 
<br/><br/><label>ISBN: </label>0851989055 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural equipment
<br/><br/><label>Dewey Class. No.: </label>681.7631072  / COL