Valkenburgh, van creator text fr The brolet press New York 1963. 1963 continuing fre eng v. : ill. ; 22 cm. Vol. 1 -- V. 2 -- V. 3 -- V. 4 -- V. 5 -- Van Valkenburgh. Includes index. Electricity Electrical engineering Periodicals Electric industries Periodicals 537 VAE 1963 DLC 140121 20211208234816.0 9614 eng