000 00304nam a2200121Ia 4500
080 _a18.08.01 U855
100 _aUNESCO
245 _aUsing calculators in the teaching of mathematics
260 _bMinistry of Education
_aHavanaCU
_c1988
300 _a12 p.
583 _c3/7/00
_kM2LMGR
942 _cM
_mU855
999 _c15722
_d15722