Principles and practice of electrical engineering, 2026-02-16T02:34:01+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Gray, Alexander, 1882-1921 (McGraw-Hill Book Company, Inc., 1914)