Motion and time study : design and measurement of work / Ralph M. Barnes. Barnes, Ralph Mosser. 1900- Motion study. Time study. 658.542 BAM Includes index. Bibliography: p. 661-678. New York : Wiley, c1980. c1980. 1980 Text xi, 689 p. : http://www.loc.gov/catdir/description/wiley033/80000173.html http://www.loc.gov/catdir/toc/onix03/80000173.html eng