00499nam a2200205Ia 4500003000400000005001700004008004100021020001800062040000700080041000800087082001800095100001800113245004100131250000600172260004200178300001500220365001300235650001400248650003100262OSt20230427091422.0210423s2010    xx            000 0 und d  a9788125931393  cAL  aeng  a658.4034 KALS  aKALAVATHY (S)  aOperations research: with c programs  a3  aNew DelhibVikaksh Publicationsc2010  axv,551bPB  b250cINR  aEconomics  aNatural Resources & Energy