What Is The Bell System?
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Copyright
Registered 15Aug76 · MP30530 (Jan-Jun 1977) Copyright holder: American Telephone and Telegraph Company/Bell System Production company: Vibrant Films, Inc
Sources
- U.S. Copyright Office, Catalog of Copyright Entries (renewals, 1970–1978) — title, year, creator, length, copyright
Record added 2026-06-28T22:04:41Z