Collected papers of Sir Harold Jeffreys on geophysics and other sciences 2026-02-15T18:07:02+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Jeffreys, Harold, Sir, 1891 (Gordon and Breach Science Publishers, 1971)