Weixianqu waiwei yao you zulan he biaoji
'Around dangerous area's we must bar the way and have signs.' Title of series: 'Mining safety and health hanging charts.'
| Institution: | International Institute of Social History |
|---|---|
| Format: | IMAGE |
| Subjects: | |
| Online Access: | http://hdl.handle.net/10622/77E12AA4-E928-4E7E-8C49-DE32E6589667 |