Data and voice encryption.
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Publication
1979 - International Resource Development, New Canaan, CT, Connecticut
Language
English
Word Count
31,000 words, Guess
Page Count
124 pages
Identifiers
- Library of Congress Control Number79116601
- Open LibraryOL4453996M
Classifications
- DDC338.4/7/621386
- LCCHD9696.T443 U54 1979
Subjects
Topics
Market surveysMarket surveys -- United StatesCryptography equipment industryCryptography equipment industry -- United States
Places
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