"watkins, a j. "
electrical installations calculations: / a.j. watkins - 1 ed. - uk : edward arnold 1992. - "vii, 112p.; 19 cm."
0-340-56866-6
electrical installation--
621. 3 wat
electrical installations calculations: / a.j. watkins - 1 ed. - uk : edward arnold 1992. - "vii, 112p.; 19 cm."
0-340-56866-6
electrical installation--
621. 3 wat