000 002930000a22001210004500
008 140223b1985 xxu||||| |||| 00| 0 eng d
041 _aEnglish
100 _a:UNESCO
245 _aSTUDIES IN MATHEMATICS EDUCATION VOL-4
260 _aPARIS
_bUNESCO
_c1985
650 _a
_a
906 _a:UNESCO
999 _c146306
_d146306