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BS 153-1-2:1958

Steel girder bridges part 1 materials and workmanship protection against atmospheric corrosion part 2 weighing, shipping and erection
standard by BSI Group, 09/12/1968

BS 1000[1]:1969

Universal Decimal Classification. English full edition-Philosophy (excluding 159.9 Psychology)
standard by BSI Group, 11/28/1969