Door closers : part - 1 : specification for mechanical performance of crank and rack and pinion overhead closers
Door closers : part - 1 : specification for mechanical performance of crank and rack and pinion overhead closers
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- London BSI 1984
- 5 p.
- BSI 6459 : part - 1 : 1984 .
DBSI 6459 : part - 1 : 1984
DBSI 6459 : part - 1 : 1984