000 00324nam a2200121Ia 4500
008 211209s2010 xx 000 0 und d
020 _a0070655485
041 _aeng
100 _aSINGH ASHOK KUMAR
245 _aSCIENCE AND TECHNOLOGY: FOR CIVIL SERVICES EXAMINATIONS
260 _aNEW DELHI
_bTMH
_c2010
300 _aVII, 646
999 _c64117
_d64117