Perceptions and analyses of world problems :  major programme I : (reflection on world problems and future-oriented studies) : synoptic report 1984-1985. 

 - París :  UNESCO,  1986. 
 - 124 p. ;  fots., il. 
<br/><br/><label>No. de Clasificación Universal Decimal: </label>308 (100) =20 PER.