Bányászat: vegyes: Szénbányászati Igazgatóság
| Institution: | Open Society Archives at Central European University |
|---|---|
| Subjects: | |
| Online Access: | http://hdl.handle.net/10891/osa:26a4aad7-2456-42dd-ba2c-c29f2a3abf3b |
| Institution: | Open Society Archives at Central European University |
|---|---|
| Subjects: | |
| Online Access: | http://hdl.handle.net/10891/osa:26a4aad7-2456-42dd-ba2c-c29f2a3abf3b |