Gregory, G. Robinson. <br/><br/>
Forest resource economics / 
G. Robinson Gregory. 
 - New York :  Wiley,  1972. 
 - viii, 548 p. 
<br/><br/><label>ISBN: </label>0471068330 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Forest products--United States.<br/>Forests and forestry--Economic aspects--United States.