000 00279nam a2200121Ia 4500
008 220201s1981 xx 000 0 eng d
082 _a658.4032
_bJAI
100 _aJain,KC & Agarwal,LN
245 0 _aPert&cpm
260 _bKhanna publisher
_c1981
300 _a198
942 _2ddc
999 _c83044
_d83044