Specification searches : ad hoc inference with nonexperimental data 2026-02-15T13:19:07+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from session cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Leamer, Edward E. (Wiley series in probability and mathematical statistics, 1978)