Introduction to environmental science 2026-02-16T05:21:06+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Strahler, Arthur Newell, 1918-; Strahler, Alan H. (Hamilton Pub. Co., 1974)