TY  - GEN
AU  - Khanna, O. P.
TI  - Work study : : time and motion study 
SN  - 9788189928414
U1  - 658.542 
PY  - 2013///
CY  - New Delhi
PB  - Dhanpat Rai Publications (P) Ltd.
KW  - Motion study
KW  - Time study
KW  - Work study
KW  - Methods engineering
ER  -