00642 a2200157 4500 Nust 20230621084528.0 Nust 384.5,ECC W.H. Eccles 113190 Wireless / W.H. Eccles London Thorton 1933 250pages Waves (Page-7), Early Spark Telegraphy (Page-42), Syntonic Spark Telegraphy (Page-64), Continuous Waves (Page-97), Beam Transmission (Page-121), The Triode (Page-138), The Triode Revolution (Page-163) Some Modern Receiving Apparatus (Page-186), Progress of Recent Years (Page-214), The Atmosphere(Page-235). ddc BKB 193932 193932 0 0 ddc 0 0 MCS MCS GEN 2016-12-12 384.5,ECC MCS29792 2016-12-08 2016-12-12 BK Almirah No.81, Shelf No.5