Linear models for unbalanced data 2026-02-15T19:39:00+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Searle, Shayle R. (Shayle R.), 1928- (Wiley series in probability and statistics, 2006)