000 00276nam a22001217a 4500
020 _a9.78933E+12
082 _a658.4
_bKAL/OPE
100 _aKalavathy S.
_91697467
245 _aOperation research
260 _aNew Delhi
_bVikas Pub.
_c2014
300 _a533p.
942 _cBK
999 _c1097872
_d1097872