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 /
STD274
BS 970 : Pt. 4 : 1970
669.14-4+669.14.018.8 /