Industrial -process control valves : part - 1 : specification and terminology for control valves
Industrial -process control valves : part - 1 : specification and terminology for control valves
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- London BSI 1989
- 9 p.
- BSI 5793 : part - 1 : 1989 .
DBSI 5793 : part - 1 : 1989
DBSI 5793 : part - 1 : 1989