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), 1833-1928 · New York : T. Audel & Co. · leaf 343
more du-rable. Worthington, Dunham, Leavitt, Holly and other leading pumpengineers had occasion to find the truth of this statement early intheir careers. H. F. Dunham confines his practice to four or four and one-half inchvalves in all cases except for pumps of very small capacity; the…
Electrical engineering
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