Barnes, Ralph Mosser 1900- Work methods manual / by Ralph M. Barnes ... - 1st ed. - New York : J. Wiley & Sons, inc.; [1944] . - vii, 136 p. incl. illus., forms, diagrs. 2 fold pl. 22 cm. "References and acknowledgements": p. 131-132. and Index. Subjects--Topical Terms: Industrial efficiency.Factory management.Motion study. Dewey Class. No.: 658.5 / BAW 1944