BS 567 : March 1973 : Asbestos-cement flue pipes and fittings, light quality
- London British Standard Institution 1973
- 17p.
STD 129
BS 567 : March 1973
621.643.2-183.3666.961:697.81 /
STD 129
BS 567 : March 1973
621.643.2-183.3666.961:697.81 /