"francis, t g. "
electrical installation work: / t.g. francis - 6 ed. - england : elbs 1988. - "ix, 277p.; 22 cm."
0 582 30561 6
electric apparatus
621. 31924 fra
electrical installation work: / t.g. francis - 6 ed. - england : elbs 1988. - "ix, 277p.; 22 cm."
0 582 30561 6
electric apparatus
621. 31924 fra