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BS 3172-1:1959

Заменен
Screw threads for spectacle frames, Specification for screw threads of Unified form for spectacle frames including screwing taps and screw gauges
BS 3172-1:1959
Заменен
BS 3172-2:1980
Заменен
BS 3172:1987
Заменен
BS EN ISO 11381:1997
Действует