Motion and time study manual
Parton, James A.
Motion and time study manual - - New York Conover-Mast Pub., 1952 - xii,400 p. 19.5 cm - .
3
Time study
Motion study
658.542 Par
Motion and time study manual - - New York Conover-Mast Pub., 1952 - xii,400 p. 19.5 cm - .
3
Time study
Motion study
658.542 Par