Geological evolution of North America 2026-02-15T22:56:05+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Clark, Thomas Henry, 1893-; Stearn, Colin William, 1928- (Ronald Press, 1968)