000 00321nam a2200121Ia 4500
001 88781
008 170722s9999 xx 000 0 und d
110 _aUnesco
245 _aThinking ahead
_bUnesco and the challenges of today and tomorow /
260 _aParis :
_bUnesco ,
_c1977.
300 _a363 p.
_c24cms
942 _cGEN
999 _c98098
_d98098