000 00286nam a2200121Ia 4500
100 _aUNESCO
365 _bRs .13/-
942 _cBK
654 _a
245 _aEducational documentation and information services
260 _aParis
_bUnited Nations educational
_c1977
082 _a370.6
999 _c403925
_d403925
041 _aeng