The changing earth : introduction to geology 2026-02-16T19:20:12+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Mears, Brainerd, 1921- (D. Van Nostrand Co., 1977)