Watkins, A. Electrical installation calculations. volume 3 / A. J. Watkins. - 3rd ed. / prepared by Russel K. Parton. - Oxford : Newnes, 1999. - viii, 189 p. - v. 3. ISBN: 0340731869 : KES 1,999 Subjects--Topical Terms: Electrical circuits. LC Class. No.: TK454 / .W38 1999