Report of the director general on the activities of the organization in 1981-1983. 

 - París :  UNESCO,  1985. 
 - xxx, 330 p. :  il., map., lamns. 
<br/><br/> Communicated to Member States and the Executive Board in accordance with Article VI.3.b of the Constitution. 
<br/><br/><label>ISBN: </label>923102258X 
<br/><br/><label>No. de Clasificación Universal Decimal: </label>DO 341.16: 001(047) (100)=20 1981-83 INF.