The Economic problem 2026-02-15T13:34:14+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Heilbroner, Robert L.; Thurow, Lester C. (Prentice-Hall, 1978)