Better Telephone Techniques
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Copyright
Registered 30Mar71 · JP14067 (Jan-Jun 1972) Copyright holder: Owen A. Zapel d.b.a. Zapel Studios Co. a.a.d.o. Z.S.C
Sources
- U.S. Copyright Office, Catalog of Copyright Entries (renewals, 1970–1978) — title, year, creator, length, copyright
Record added 2026-06-28T22:00:33Z