Decimals: Addition and Subtraction
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Copyright
Registered 5Aug70 · MP21068 (Jan-Jun 1971) Copyright holder: General Learning Corp Production company: Davidson Films
Sources
- 16mm Filmography (legacy record) — title, length
- U.S. Copyright Office, Catalog of Copyright Entries (renewals, 1970–1978) — copyright
Original permalink · Record added 2024-09-08 01:16:31