00341nam a2200133Ia 4500008004100000020002200041040002600063082001700089100003400106245002400140260002200164003000400186005001700190241206s9999||||xx |||||||||||||| ||und||  a97881219028816c0  bengcSSK Libraryerda  a658.4034/GUP  a Prem Kumar Gupta,  D.S. Hira 0aOperations Research  b S. Chandc©1979OSt20241206223230.0