Knee Bent Sit-Up, Pull-Up, Flexed-Arm Hang, Chair Push-Up
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Copyright
Registered 9Dec74 · MP27627 (Jul-Dec 1975) Copyright holder: Board of Education, San Diego County
Sources
- U.S. Copyright Office, Catalog of Copyright Entries (renewals, 1970–1978) — title, year, creator, length, copyright
Record added 2026-06-28T22:03:44Z