00768cam a2200241u 4500 6463672 BD-DhUL 20150115100414.0 830506s1944 enka 000 0 eng 45000835 DLC CarP DLC BD-DhUL TK6563 .W57 1944 621.384 WIS Witts, Alfred Thomas, 1899- [from old catalog] The superheterodyne receiver : its development, theory and modern practice / 6th ed. London : Sir I. Pitman & sons, ltd., c1944. vi, 210 p. : diagrs. ; 19 cm. Includes Index. Radio Receivers and reception. 0 cbc premunv u ncip 19 y-gencatlg ddc BK 31368 31368 0 0 ddc 0 621_384000000000000_WIS 0 NFIC 59183 DUSL DUSL GEN 1953-01-07 Purchased 621.384 WIS 82177 2015-01-15 2015-01-15 BK