000 00304nam a2200121Ia 4500
008 180721s9999 xx 000 0 und d
100 _aASHOK KUMAR SINGH
245 0 _aScience & Technology for civil services Examinations
260 _bMCGRAW HILL
260 _c2012
365 _b375.00
942 _cBK
999 _c159622
_d159622