Dimian pidailun zhouwei yao zhuang anquan langan
'Around the leather belt wheels on the ground we must install safety railings.' Title of series: 'Mining safety and health hanging charts.'
| Institution: | International Institute of Social History |
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| Format: | IMAGE |
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| Online Access: | http://hdl.handle.net/10622/DCAD7FA9-6526-41DC-9490-38553C9B5AFB |
| Summary: | 'Around the leather belt wheels on the ground we must install safety railings.' Title of series: 'Mining safety and health hanging charts.' |
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