000 00273nam a2200121Ia 4500
100 _aInternational Bureau of Education
942 _cBK
245 _aBulletin No. 87
260 _aGeneva
_bI.B.E.
_c1948
082 _a370.5
_bI.B.E.
300 _a2,81-95
546 _aEnglish
999 _c330074
_d330074
041 _aeng