Linear programming : an emphasis on decision making / Ann J. Hughes, Dennis E. Grawiog [i.e. Grawoig]. Hughes, Ann J. Grawoig, Dennis E. Linear programming. Decision making. T57.74 .H83 1973 519.92 HUL 19 Includes index. Reading, Mass. : Addison-Wesley, 1973. 1973. 1973 Text xv, 414 p. : eng