Electronic Engineering Master Index, volumes 1946, 1947-1948, 1949 (3 volumes 1946-1949).
Electronic Research Publishing Co., NY 1947 etc; approx. 830 pages in 3 volumes, double-column text, alphabetical listings.
Electronic Research Publishing Co., NY 1947 etc; approx. 830 pages in 3 volumes, double-column text, alphabetical listings.