Clark, Colin,    1905- <br/><br/>
The economics of subsistence agriculture /  
by Colin Clark and Mag aret Haswell 
 - 3rd ed. 
 - London :    New York :    Macmillian ;    St. Martin's P.,    1967, 1968 
 - X, 245 p. :    ill. ;    23 cm. 
<br/><br/>Includes bibliographical references (p.225-236) 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Agriculture -- Economic aspects
<br/><br/><label>Dewey Class. No.: </label>338.1