000 00276nam a2200121Ia 4500
008 220201s1990 xx 000 0 eng d
082 _a612.54
_bAGR
100 _aAgrawal, M S
245 0 _aAaurten
260 _aDelhi
_bPrabhat Prakashan
_c1990
300 _a216
942 _2ddc
999 _c26242
_d26242