Simpson, Ken, 1921-  Simpson, Ken, 1921- <br/><br/>
Fertilizers and manures / 
Ken Simpson. 
 - London ; New York :  London ; New York :  Longman,  1986. 
 - Longman handbooks in agriculture .
<br/><br/> Includes indexes. 
<br/><br/>Bibliography: p. 243. 
<br/><br/><label>ISBN: </label> L.10.95 
<br/><br/><label>LCCN: </label>85015950 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fertilizers.<br/>Manures.
<br/><br/><label>LC Class. No.: </label>S633  / .S624 1986 
<br/><br/><label>Dewey Class. No.: </label>631.8/1