Matches in Library of Congress for { ?s ?p Telecommunication systems Security measures Data processing.. }
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- 94041526 subject "Telecommunication systems Security measures Data processing.".
- 95013653 subject "Telecommunication systems Security measures Data processing.".
- 95015916 subject "Telecommunication systems Security measures Data processing.".
- 96061896 subject "Telecommunication systems Security measures Data processing.".