Berndt Ernst R <br/><br/>
Modeling and measuring natural resource substituti 

 - Cambridge  MIT            1981 
 - 314p  cm. 
<br/><br/> Bibliography: P 290-306 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Natural Resources Economics
<br/><br/><label>Dewey Class. No.: </label>X:271:(B), M1