Shebei bu anquan bu weiying you fangzhu zhao
'Unsafe parts of machinery must have protective covers.' Setno. 15033.3707. Chinese title of the series is "anquan shengchan guatu".
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| Institution: | International Institute of Social History |
| Format: | IMAGE |
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1964, December
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| Online Access: | http://hdl.handle.net/10622/39F7BB68-B4D6-4118-BC6D-6F74C50D38EB |