Johnson, Gary V, ed. Johnson, Rebecca L, ed. <br/><br/>
Economic valuation of natural resources  issues, theory and applications 

 - Oxford  Westview press  1990 
 - xiii, 220p.; 24cm. 
<br/><br/><label>ISBN: </label>813378389 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Contingent valuation method<br/>Elnvironmental assets<br/>Natural resources - management<br/>Natural resources - valuation<br/>Valuation theory