The measurement of development effort :  study / 
United Nations Conference on Trade and Development, Secretariat. 
 - vii, 64 pages ;  23 cm 
 - United Nations. Document  TD/B/C.3/75/Add.1/Rev. 1 .
<br/><br/> "United Nations publication. Sales number: E.71.II.D.4." 
<br/><br/><label>Source: </label>E.71.II.D.4 
<br/><br/><label>LCCN: </label>72170529 //r85 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Developing countries--Economic conditions
<br/><br/><label>LC Class. No.: </label>HC59.7  / .U4817 1970