Practical electrical engineering, direct currents; a manual for use in industrial and evening schools and for home study, 2026-02-16T02:33:55+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Cisin, Harry George, 1892- (D. Van Nostrand Company, 1922)