Ennos, A.R. <br/><br/>
Problem solving in environmental biology, A.R. Ennos, eng 

 - LoNew Delhion, Longman  1995 
 - vii,175p.  28cm 
<br/><br/><label>ISBN: </label>0582218748 
<br/><br/><label>Dewey Class. No.: </label>628,  / D, enn