Modern production/operations management / Elwood S. Buffa. Buffa, Elwood Spencer 1923- Production management. TS155 .B723 1980 658.5 BUM Fifth ed. published in 1977 under title: Modern production management. Includes bibliographies and index. New York : John Wiley, c1980. c1980. 1980 Text xx, 673 p. : eng The Wiley series in management ;