The measurement of development effort:   study by the UNCTAD secretariat. 

 - New York :      UN,  1970     
 - vii, 64p. ;  24 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economic development<br/>Developing countries<br/>Economic conditions
<br/><br/><label>Dewey Class. No.: </label>338.89  / UNC