000 00560nam a22002057a 4500
003 OSt
005 20181015102502.0
008 181015b xxu||||| |||| 00| 0 eng d
040 _aLB-BrCRDP
082 _a510.5 N272l
110 _aThe National Council of Teachers of M.; Twenty-first yearbook
245 _aThe Learning of mathematics:its theory and practice
260 _aWashington
_b NCTM,
_c1967
300 _a355p
_c24cm
630 _a Matemáticas
630 _aEnseñanza
630 _aEstados Unidos
630 _aAnuarios.
942 _2ddc
_cBK
999 _c21897
_d21897