Clark, Colin,  1905- <br/><br/>
The economics of subsistence agriculture / 
Colin Clark and Margaret Haswell. 
 - 3rd ed. 
 - London,  Melbourne [etc.]  New York,  Macmillan;  St. Martin's P.,  1967 [i.e. 1968] 
 - x, 245 p. :  ill. ;  23 cm. 
<br/><br/> CONTENTS<br/><br/>I food requirements<br/>II pre agricultural man<br/>III Primitive and shifting agriculture<br/>IV. Agricultural progress measured in grain equivalents<br/>V . Production and productivity<br/>VI Rents and prices of agricultural land<br/>VII labor and land<br/>VIII Consumption<br/>IX. Transport<br/>x. Trade, Aid and development <br/><br/> 
<br/><br/>Bibliography: p. [225]-236. 
<br/><br/><label>LCCN: </label>68011947  
<br/><br/><label>Nat. Bib. No.: </label>B68-01797 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture--Economic aspects.
<br/><br/><label>Dewey Class. No.: </label>338.1  / CLA