Study guide, Managerial economics. 2026-02-15T23:23:55+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Petersen, Harold Craig; Lewis, W. Cris (Macmillan, 1990)