Basic econometrics 2026-02-16T11:24:21+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Gujarati, Damodar N.; Porter, Dawn C. (The McGraw-Hill series, economics, 2009)