00462pamaa2200169 4500 0000008558 20060530090000.0 0471059056 658.542 BAR 1980 T60.4 BAR 1980 BARNES Motion and time study : design and measurement of work Ralph M. Barnes. 7th ed. New York: John Wiley, 1980. xi, 689p.: ill.; 1980. Motion study Time study