40 horas :
| Institution: | International Institute of Social History |
|---|---|
| Format: | TEXT |
| Published: |
s.n.],
1985.
[S.l. : |
| Subjects: | |
| Online Access: | http://hdl.handle.net/10622/7E8F745C-06D6-46C1-91BD-137F29974DD0 |
| Published: | 1985. |
|---|