Thirsk, Wayne R. <br/><br/>
Ease of factor substitution in agriculture, 
by Wayne R. Thirsk. 
 - Houston, Tex.,  Program of Development Studies, William Marsh Rice University,  1972. 
 - Paper (Rice University. Program of Development Studies) ;  no. 34 .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>LCCN: </label>74194116 //r93 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture -- Economic aspects -- Colombia -- Mathematical models.--Agriculture -- Economic aspects -- Colombia -- Mathematical models.--Agriculture -- Economic aspects -- Colombia -- Mathematical models.--Agriculture -- Economic aspects -- Colombia -- Mathematical models.
<br/><br/><label>LC Class. No.: </label>HD82  HD1882  / .W535 no. 34 
<br/><br/><label>Dewey Class. No.: </label>338/.008 s  338.1/09861