00314nam a2200133Ia 4500003000400000005001700004008004100021020001800062100001600080245002300096250000900119260004200128300001000170TMU20250719101730.0230125s9999    xx            000 0 und d  a9789387620643  aGupta, R.K. 0aOperation Research  a38th  bKrishna Prakashan Mediac2018aMeerut  a864p.