Colwell, J. D. <br/><br/>
Estimating fertilizer requirements :  a quantitative approach / 
J.D. Colwell. 
 - Wallingford, Oxon :  CABI,  c1994. 
 - x, 262 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0851989055 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fertilizer requirements--Statistical methods.<br/>Fertilizer requirements--Mathematical models.
<br/><br/><label>LC Class. No.: </label>S633  / .C726 1994 
<br/><br/><label>Dewey Class. No.: </label>631.8/1