Diangong gongzuoqian yao jiancha jueyuan yongju
'Before starting electrical work isolated equipment must be checked.' 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/10622/4E2DD342-C35F-4B34-A00A-83507B257A4D |