Subject Classification Training. Pt. 1-2
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Copyright
Registered 3Aug71 · JU12913 (Jul-Dec 1971) Copyright holder: Perfect Photo, Inc., subsidiary of GAF Corp
Sources
- U.S. Copyright Office, Catalog of Copyright Entries (renewals, 1970–1978) — title, year, creator, length, copyright
Record added 2026-06-28T22:00:26Z