000 00400nam a2200169Ia 4500
008 131223s9999 xx 000 0 und d
040 _aISI KOLKATA
041 _aEnglish
082 _a513.07
_bW556
100 _aWheat H G
245 _aPsychology and teaching of arithmetic
260 _aBoston
_bHeath
_c1937
300 _a591p
650 _aArithmetic
650 _aMathematics
942 _cBK
999 _c28716
_d28716