00605cam a2200217u 4500 8313353 BD-DhUL 20140919122344.0 820610s1939 enka 000 0 eng 39031917 DLC CarP DLC BD-DhUL TK5981 .M4 534.1 MEE Meyer, Erwin, 1899- Electro-acoustics, London, G. Bell and sons ltd., 1939. xi, 117 p. illus., xii pl., diagrs. 23 cm. Electro-acoustics. 0 cbc premunv u ncip 19 y-gencatlg ddc BK 11921 11921 0 0 ddc 0 534_100000000000000_MEE 0 NFIC 21228 DUSL DUSL GEN 2014-09-19 Purchase 534.1 MEE 45577 2014-09-19 2014-09-19 BK