Northwood Books
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CIPHER SYSTEMS
Written by Henry Beker; Fred Piper.
Stock no. 2121634
Published by Northwood Books.
1st
1982.
Slightly better than very good condition.
The Protection of Communications. Pictorial card wraps. 427 pages. ISBN: 0442306083. Light creasing to corners. A few marks to outer page edges.
- Categorised in:
- SCIENCE AND TECHNOLOGY
- MATHS