000 00470nam a2200169Ia 4500
999 _c7990
_d7990
005 20220530115019.0
008 180712s9999 xx 000 0 und d
020 _a631135812
041 _aEN
082 _a371.35
_bHUG
_223
100 _aHUGHES, Martin
_eaut
245 _aChildren and number: difficulties in learning mathematics
_c/[by] Martin Hughes
260 _aNew York
_bBasil Blackwell
_c1986
300 _axi, 195 p.
500 _aIncludes index.
942 _cS