Jeffries, Clark. <br/><br/>
Mathematical modeling in ecolosy  a Work book for studies. 
by Clark Jeffries 
 - Burton  Birkhauser  1989 
 - viii, 193p. 
 - Mathematical modeling  No.3 .
<br/><br/><label>ISBN: </label>0811763421111.5 
<br/><br/><label>Dewey Class. No.: </label>574.5  / N89