00400nam a22001337a 4500 621.3815362 AMP L-11, P-59 Schure, Alexander 41545 Amplitude modulation Schure, Alexander New York. : John F. Rider Publisher, Inc. 1956 56 p. : ill, 20 cm. 0 0 0 621_381536200000000_AMP MCE 379 ddc BK 545750 545750 0 0 ddc 0 0 MCE MCE 2014-05-29 0 621.3815362 AMP MCE-2261 2014-05-29 2014-05-29 BK