HELLRIEGEL, Don Slocum, John W., Jr. Management: contingency approaches /[by] Don Hellriegel, John W.Slocum., Jr. - 2nd ed. - Menlo Park Addison-Wesley 1978 - xv, 607 p. Includes index. ISBN: 201028549 Subjects--Topical Terms: Management Dewey Class. No.: 658.01 / HEL