00297nam a2200109Ia 4500082002000000100003800020245005200058260002900110300001300139500000500152700003000157 a519.72bB763.LP aBoulding, K. E. and Spivey, W. A. aLinear programming and the theory of the firmb aNew YorkbMcmillanc1960 ax, 227p. a aSpivey, W. A. ; jt. auth.