TY - BOOK ED - Heathkit / Zenith Educational Systems. Group TI - DC electronics: a step-by-step introduction PY - 1983/// CY - Englewood Cliffs, N.J. PB - Prentice-Hall KW - Electric circuits KW - Direct current N1 - 'Spectrum book'; Reproduces the text of the ed. published : Benton Harbor, Mich. : Heath Co., c1978 ; programmed reviews and unit objectives omitted; Includes index ER -