000 00271nam a2200109Ia 4500
008 190719s9999 xx 000 0 und d
100 _aR S Dahiya & others
245 0 _aComprehensive coordinate geometry
260 _aDelhi
_bLaxmi Pub
_c1987
650 _aMath
942 _cBK
999 _c6160
_d6160