00411nam a2200181Ia 4500003000400000005001700004008004100021020001500062040000700077041000800084082002400092100001900116245002500135250000600160260003900166300001100205365001300216OSt20230421110034.0210423s2009    xx            000 0 und d  a9785545632  cAL  aeng  a658.4034 223bKALS  aKALAVATHY (S).  aOperations research.  a2  aNew DelhibW H Freeman & Co.c2009  axv,536  b200cINR