00301nam a22001217a 4500020001800000040000900018082001500027100002200042245002700064250001700091260004400108650002700152  a9780071141376  cNust  a658.5bDIL  aJames B. Dilworth  aOperations management   a2nd edition   aNew York:bMcGraw  Hill company,c1996.  aOperations management