000 00326nam a2200133Ia 4500
008 240723s9999 xx 000 0 und d
041 _aEnglish
084 _aB
_bK6
245 0 _aNumber Systems of Elementary Mathemation
260 _aDelhi
_bAddisen Wesley
_c1966
300 _ap.246
650 _aMathematics
942 _cBK
999 _c302958
_d302958