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BS 970 : Pt. 4 : 1970 : Specification for wrought steels in the form of blooms, billets, bars and forgings : stainless, heat resisting and valve steels - London British Standards Institution 1970 - 75p.

STD274

BS 970 : Pt. 4 : 1970

669.14-4+669.14.018.8 /

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