Tivy, Joy <br/><br/>
Agricultural ecology / 
Joy Tivy 
 - New York :  Longman,  1990 
 - vii, 288 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographies and indexes 
<br/><br/><label>ISBN: </label>0582301637 
<br/><br/><label>LCCN: </label>89-012100 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural ecology