Cite
APA Citation
Institution,, B. S. (1995). Specification for open bottomed taper plug valves for 1st, 2nd and 3rd family gases up to 200 mbar.. London : British Standards Institution. http://access.bl.uk/ark:/81055/vdc_100104784970.0x000001
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Institution,, B. S. (1995). Specification for open bottomed taper plug valves for 1st, 2nd and 3rd family gases up to 200 mbar.. London : British Standards Institution. http://access.bl.uk/ark:/81055/vdc_100104784970.0x000001