Schellenberger, Robert Earl. Managerial analysis / [by] Robert E. Schellenberger. - Homewood, Ill., Irwin, 1969. - xv, 461 p. illus. 24 cm. - Irwin series in quantitative analysis for business . Includes bibliographies. LCCN: 69017165 Subjects--Topical Terms: Industrial management--Mathematical models. LC Class. No.: HD20.7 / .S32 Dewey Class. No.: 658.028 / SCM 1969