Barnes, Ralph M.
Motion and time study sign and measurement of work - 7th ed - New York John Willey & Sons 1980 - vii, 689 p. illus.
Motion study
658.512 / BAR/1980
Motion and time study sign and measurement of work - 7th ed - New York John Willey & Sons 1980 - vii, 689 p. illus.
Motion study
658.512 / BAR/1980