TY  - BOOK
AU  - Barnes, Ralph M.
TI  - Motion and time study: design and measurement of work
SN  - 9780471059059
U1  - 658.542 
PY  - 1980///
CY  - New York
PB  - John Wiley
KW  - Time study
KW  - Motion study
KW  - Industrial efficiency
ER  -