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BS 1975:1957
Specification. Primary cells and batteries for intrinsically safe circuits in coal mines
被代替
发布日期 :
1957-01-01
实施日期 :
BS M 25:1957
Chemical preparations for chemical closets (portable type) for aircraft
被代替
发布日期 :
1957-09-05
实施日期 :
BS M 26:1957
Chemical preparations for chemical closets (re-circulation type) for aircraft
被代替
发布日期 :
1957-09-05
实施日期 :