Hydraulic engineering. . Building workers. . Working conditions
| Main Author: | |
|---|---|
| Institution: | International Institute of Social History |
| Format: | IMAGE |
| Subjects: | |
| Online Access: | http://hdl.handle.net/10622/E167D672-C197-4FBE-8AE7-257FD3C165C2 |
| Main Author: | |
|---|---|
| Institution: | International Institute of Social History |
| Format: | IMAGE |
| Subjects: | |
| Online Access: | http://hdl.handle.net/10622/E167D672-C197-4FBE-8AE7-257FD3C165C2 |