TY  - BOOK
AU  - International labour office
TI  - Introduction to work study
SN  - 81 204 0602 8
U1  - 658 .4 
PY  - 1991///
CY  - New Delhi
PB  - Oxford and IBH Publishing Company Pvt Ltd
KW  - Productivity concepts
KW  - techniques for productivity
ER  -