Problem solving : a handbook for teachers 2026-02-16T08:27:18+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Krulik, Stephen; Rudnick, Jesse A. (Allyn and Bacon, 1980)