00822cam a2200241u 4500 8913214 BD-DhUL 20150119114246.0 810202s1961 enk 000 0 eng 63006156 DLC CarP DLC BD-DhUL TK5981 .G3 620.102 GAA Gayford, M. L. [from old catalog] Acoustical techniques and transducers : loudspeakers, microphones, gramophone pick-ups, room acoustics, vibration measurements, stereophonic reproduction / M. L. Gayford. London : Macdonald and Evans ; c1961. xx, 372 P. : ill. ; 23cm. includes index. Electro-acoustics. Transducers. 0 cbc premunv u ncip 19 y-gencatlg ddc BK 33180 33180 0 0 ddc 0 620_102000000000000_GAA 0 NFIC 62094 DUSL DUSL GEN 1968-04-20 620.102 GAA A50183 2015-01-19 2015-01-19 BK