Tivy, Joy <br/><br/>
Agricultural ecology 

 - 1st 
 - Essex  Longman Scientific & Technical  1990 
 - viii,288p. p. ; 23cm pbk 
<br/><br/><label>ISBN: </label>0 582 30163 7 
<br/><br/><label>Subjects--Index Terms: </label>Agricultural ecology