00549cam a2200217Ka 45000010005000000030003000050050017000080080041000250200015000660350018000810350017000990410008001160500021001241000028001452450047001732500010002202600028002303000010002586500034002687000029003022363UR20220427175813.0940609s1983            r     00010 spa d  a9682604109  a(janium) 2352  a(janium)2352  aspa 4aHD20.5b.D8 1969  aDUCKWORTH, WALTER ERIC. 0aGUIA PARA LA INVESTIGACION DE OPERACIONES.  a1 Ed.  aMexico bCECSA  c1983.  a226p.  aInvestigacion de operaciones.  aA.E. GEAR. A.G. LOCKETT.