(1965). Specification for cast iron spigot and socket pipes (vertically cast) and spigot and socket fittings. London: British Standards Institution.
Παραπομπή Chicago StyleSpecification for Cast Iron Spigot and Socket Pipes (vertically Cast) and Spigot and Socket Fittings. London: British Standards Institution, 1965.
Παραπομπή MLASpecification for Cast Iron Spigot and Socket Pipes (vertically Cast) and Spigot and Socket Fittings. London: British Standards Institution, 1965.
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