00385nam a2200169Ia 4500003000400000005001700004008004100021040000700062041000800069082002400077100001900101245002500120250000600145260004000151300001100191365001300202OSt20230327112152.0210423s2009    xx            000 0 und d  cAL  aeng  a658.4034223b KALS  aKALAVATHY (S).  aOperations research.  a2  aNew DelhibVikas Publicationsc2009  axv,536  b150cINR