Gass, Saul I. Linear programming : methods and applications / Saul I. Gass. - 2d ed., International Student ed. - New York : McGraw-Hill, c1964. - xii, 280 p. : ill. ; 23 cm. Includes index. Subjects--Topical Terms: Linear programming. Dewey Class. No.: 519.72 / GAL 1964