00860cam a22002651 4500 3124328 BD-DhUL 20150115152133.0 710629s1967 enkac b 000 0 eng 68103766 B67-15190 DLC DLC DLC BD-DhUL TK5101 .B33 1967b 621.3815 Beck, A. H. W. (Arnold Hugh William), 1916- Words and waves: an introduction to electrical communications / A. H. W. Beck. London : Weidenfeld & Nicolson, c1967. 255 p. : front., illus. (incl. ports.), tables, diagrs. (some col.) 19 cm. 25/- World university library Bibliography: p. 245-246. Telecommunication. 7 cbc orignew u ncip 19 y-gencatlg ddc BK 31734 31734 0 0 ddc 0 621_381500000000000 0 NFIC 59783 DUSL DUSL GEN 1973-03-23 Purchased 621.3815 A95906 2015-01-15 2015-01-15 BK