Echo In Space - Communication Milestone
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Describes the first establishment of communications in outer space by the Echo Satellite project in 1960.
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Sources
- A-V Online (National Information Center for Educational Media). CD-ROM database of educational and documentary media, compiled and maintained by the National Information Center for Educational Media (NICEM). — title, year, creator, length, format, sound, description
- 16mm Filmography (legacy record) — catalog record
- usgov-av-1974 — title, year, creator, length, color, sound, description
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