Natural resource and environmental economics / 
Roger Perman ... [et al]. 
 - 3rd  ed. 
 - London :  Pearson Education,  2003. 
 - xxv, 699  p. 
<br/><br/><label>ISBN: </label>0237655590 :  KES 7150 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental economics.<br/>Natural resources--Management.<br/>Sustainable development.