Krutilla, John V. <br/><br/>
The economics of natural environments  : studies in the valuation of commodity and amenity resources 
/ John V. Krutilla, Anthony C. Fisher 
. - London  : Johns Hopkins University Press, 1975
. - XVIII-292 p.  : couv.ill.en coul.  ; 23 cm. 
<br/><br/>Index. 
<br/><br/><label>ISBN: </label>0801817528 
<br/><br/><label>Source: </label>63676  Achat 
<br/><br/><label>Universal Decimal Class. No.: </label>581.5