Sasieni, Maurice Operations research : methods and problems / Maurice Sasieni, Arthur Yaspan and Lawrence Friedman - New York : John Wiley, c1959. - xi, 316 p. ; ill., figs., tabs. ; 23 cm. Includes index Subjects--Topical Terms: Operations research.Industrial management --Mathematical models. LC Class. No.: Q175 / .S27 1959 Dewey Class. No.: 658.5 / S225o