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كتاب السنة الكهربائية EMF (كتاب)
Book digitized by Google from the library of University of Wisconsin - Madison and uploaded to the Internet Archive by user tpb.
5 volumes ; 30 cm
"An encyclopedia of current information about each branch of the electrical industry with a dictionary of electrical terms and a classified directory of electrical and related products and their manufacturers in the United States and Canada."
Edited by Frank H. Bernhard
1st (1922 ed.); title from title page
3rd, 1924 ed
