TY  - BOOK
AU  - Mariâc,D.
TI  - Adapting working hours to modern needs : : the time factor in the n ew approach to working conditions / 
SN  - 9221016595.
PY  - 1977///
CY  - Geneva : 
PB  - International Labour Office, 
KW  - Hours of labor
N1  -  Bibliography : p. 47-50
ER  -