Wiren, Alexis Robert, 1897- Practical management research / Alexis R. Wiren ... and Carl Heyel ... - 1st ed. - New York ; London : McGraw-Hill Book Company, inc., c1945. - x, 222 p. : 22 cm. - McGraw-Hill industrial organization and management series . Subjects--Topical Terms: Research, Industrial.Industrial organization.Industrial efficiency.Industrial management. Dewey Class. No.: 658.01 / WIP 1945