TY  - GEN
ED  - International Labour Office
TI  - Year book of labour statistics
SN  - 0084-3857
AV  - HD4826 .I63 2005
PY  - 2005///
CY  - Geneva,
PB  - International Labour Office
KW  - Working class
KW  - Statistics
N1  - This material appeared in the I. L. O. year-book from 1930
ER  -