Putman R J <br/><br/>
Principles of ecology / 
R.J. Putnam and S.D. Wratten 
 - London :  Croom Helm,  c1985. 
 - 388 p :  ill ;  24 cm 
<br/><br/>Includes bibliography and index 
<br/><br/><label>ISBN: </label>0709920164 0709920504 (pbk) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology
<br/><br/><label>LC Class. No.: </label>QH541