Gunatilake, Herath M. <br/><br/>
Environmental valuation:   theory and applications /  English. 
Postgraduate Institute of Agriculture University of Peradeniya. 
 - Peradeniya :   Postgraduate Institute of Agriculture University of Peradeniya,   2003. 
 - xiv, 373 p. :   25cm. 
<br/><br/><label>ISBN: </label>9789559812104 ; 9559812106 
<br/><br/><label>Dewey Class. No.: </label>X551.588  / GUN