(1962). Specification for flanges and bolting for pipes, valves and fittings. London: British Standards Institution.
Παραπομπή Chicago StyleSpecification for Flanges and Bolting for Pipes, Valves and Fittings. London: British Standards Institution, 1962.
Παραπομπή MLASpecification for Flanges and Bolting for Pipes, Valves and Fittings. London: British Standards Institution, 1962.
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