"watkins, a j. "
electrical installation calculations volume 2: / a.j. watkins - 5 ed. - london : arnold 1999. - "viii, 124p.; 22 cm."
0 340 73185 0
TK454 / .W38 1998
electrical installation calculations volume 2: / a.j. watkins - 5 ed. - london : arnold 1999. - "viii, 124p.; 22 cm."
0 340 73185 0
TK454 / .W38 1998