00283nam a2200109Ia 4500008004100000020001800041082001500059100002200074245002400096260004000120300001300160190710s9999    xx            000 0 und d  a81-219-0281-9  a658.4034 G  aGupta, Prem Kumar 0aOperations research  aNew DelhibS. Chand & Companyc2014  axii,1418