000 00272nam a22001217a 4500
020 _a9788121938532
082 _a519.5
100 _aAsthana, B N
245 _aElements of Statistics
260 _aNew Delhi
_bS. Chand & Company Ltd.
_c2011
300 _aPV
942 _cBK
999 _c32576
_d32576