JEFFERS, John N. R. <br/><br/>
An Introduction to Systems analysis: With ecological applications 

 - London  Edward Arnold  1978 
 - 198 p. 
 - A Series of student texts in- Contemporary Biology .
<br/><br/><label>ISBN: </label>0-7131-2652-3 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ECOLOGIA<br/>SISTEMAS<br/>BIOLOGIA
<br/><br/><label>Universal Decimal Class. No.: </label>581 JEF