000 00255nam a22001097a 4500
082 _a342.5404
_bKHE.C
100 _aKhera,S S
245 _aCentral executive /
_cby S S. Khera
260 _aNew Delhi :
_bOrient Longman,
300 _a334p. :
942 _cBK
999 _c643223
_d643223