000 00291nam a2200133Ia 4500
008 190216s9999||||xx |||||||||||||| ||und||
100 _aShanthi Narayan
245 0 _aNumber Systems
250 _a1st Ed.
260 _bNull
_c1970
300 _a128 p
650 _aMathematics
942 _cBK
999 _c30490
_d30490