00263nam a2200097Ia 4500008004100000082002200041100002100063245004300084260002500127300001300152260206b        |||||||| |||| 00| 0 eng d  a658.4034bC563.IT  aChurchman, C. W.  aIntroduction to operations researchb/  aBombay:bAsia,c1962  ax, 645p.