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Subject
- Communication systems[remove]54
- Telecommunication systems46
- Administrative agencies7
- Federal Telecommunications System (U.S.)7
- United States. Coast Guard7
- Evaluation6
- United States. Army5
- Business enterprises4
- Costs4
- Government communication systems4
- Management4
- Procurement4
- Study and teaching4
- Artificial satellites in telecommunication3
- Astronautics3
- Broadband communication systems3
- Business3
- Communications3
- Communications, Military3
- Competition3