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Subject
- Communication systems[remove]47
- Telecommunication systems[remove]47
- United States. Coast Guard7
- United States. Army5
- Business enterprises4
- Evaluation4
- Study and teaching4
- Broadband communication systems3
- Business3
- Communications3
- Communications, Military3
- Competition3
- Computer networks3
- Consolidation and merger of corporations3
- Consumer protection3
- Electronic surveillance3
- Law enforcement3
- Telecommunication3
- United States3
- Videoconferencing3