Gayford, M.L.
Electro acoustics : microphones, earphones and loudspeakers - London Newnes Butterworths 1970 - 289 p.
621.395.6 / G3
Electro acoustics : microphones, earphones and loudspeakers - London Newnes Butterworths 1970 - 289 p.
621.395.6 / G3