"watkins, a y. "
electrical installation calculations: / a.y. watkins - 6 ed. - usa : elsevier 2006. - "vii, 188p.; 22 cm."
978 0 7506 6783 8
TK454 / .W38 2006
electrical installation calculations: / a.y. watkins - 6 ed. - usa : elsevier 2006. - "vii, 188p.; 22 cm."
978 0 7506 6783 8
TK454 / .W38 2006