Principles and practice of electrical engineering 2026-02-15T13:14:58+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Gray, Alexander, 1882-1921- (McGraw-Hill Book Company, Inc., 1914)