000 00403nam a2200145Ia 4500
082 _a510.7
_bBIM
100 _aBiggs, J. B.
_9205064
245 _aMathematics and the conditions of learnin
_ba study of arithematic in the primary school
260 _aEngland:
_bWales,
_c1967.
300 _axi, 441p.
500 _aHBK
546 _aEng
650 _aMathematics-Study and teaching
_9205065
942 _cBK
999 _c20460
_d20460