Research for tomorrow's schools: disciplined inquiry for education; report 2026-02-15T13:47:07+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Cronbach, Lee J. (Lee Joseph), 1916-; Cronbach, Lee J. (Lee Joseph), 1916-; Suppes, Patrick, 1922- (Macmillan, 1969)