Hawkins electrical guide. Questions, answers & illustrations; a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833- · New York, T. Audel · leaf 113
e supported by wooden poles. In tropical countries, however,such as India, Central America, etc., where wood is rapidlydestroyed by the ravages of white ants and other insects, ironpoles are almost exclusively used for telegraph, telephone, andother electric transmission lines. The form of iron… … ,^^MMi^^Uimi^^^^SSSSS^^m
Electrical engineering
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