TY - BOOK ED - National Joint Apprenticeship and Training Committee for the Electrical Industry TI - DC Theory SN - 1401856861 AV - TK146.D55 2004 PB - Thomson/Delmar Learning KW - Electrical engineering KW - Electric circuits - Direct current KW - Electricity KW - TK N1 - In partnership with NJATC - on cover; Includes index ER -