Rpberts, R D  . <br/><br/>
Planning and ecology /  
edited by R. D. Roberts and T. M. Roberts. 
 - New York :   Chapman and hall ,   1986. 
 - xi, 464p. :   ill., figs. and table ;   23cm .  
<br/><br/>Includes index 
<br/><br/><label>ISBN: </label>0412284707  UKP 21.00 
<br/><br/><label>Subjects--Index Terms: </label>ECOLOGY 
<br/><br/><label>Dewey Class. No.: </label>333.7  / ROB/P