Directional antennas / by Carl Edwin Smith. Smith, Carl Edwin, 1906- Radio Antennas. TK6565.A6 S6 621.3843 SMD Pts. 2 and 3 are made up entirely of diagrams. Errata sheet inserted. Bibliography: p. vii-ix. Cleveland : Cleveland Institute of Radio Electronics, 1946. 1946. 1946 Text various pagings : eng