Impianti elettrici a correnti alternate semplici, bifasi e trifasi : manuale pratico per lo studio construzione ed esercizio di essi / Ing. Attilio Marro
Electrical engineer's pocket-book : a hand-book of useful data for electricians and electrical engineers / Horatio A. Foster
Guide to the practical elements of electrical testing / J. Warren
New dynamo tenders' hand-book : with one hundred and forty illustrations / F. B. Badt