000 00291nam a2200109Ia 4500
008 211215s9999 xx 000 0 und d
040 _cJayakar Knowledge Resource Centre
100 _aUnesco
245 0 _aEducational Studies and Documents No 39 to 45
260 _bAuthor
_aParis
942 _c1
999 _c72148
_d72148