Clark, Colin,  1905-1989. <br/><br/>
The economics of subsistence agriculture / 
by Colin Clark and Margaret Haswell 
 - 3rd ed. 
 - London :  Melbourne :  Macmillan,  1967 
 - viii, 245 p. :  ill. ;  23 cm. 
<br/><br/>Includes bibliography: (p. [225]-236) and index  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture--Economic aspects.
<br/><br/><label>Dewey Class. No.: </label>338.1  / CLE 1967