BS 4505 : Pt. 4 : 1971 : Specification for digital data transmission : code independent information transfer
- London BRITISH STANDARDS INSITUTION 1971
- 8p.
STD1615
BS 4505 : Pt. 4 : 1971
681.32 /
STD1615
BS 4505 : Pt. 4 : 1971
681.32 /