Gayford, M.L..
Electroacoustics : Microphones, Earphones, Loudspeakers / Gayford M.L.. - London : Newnes-Butterworths, 1970. - XI, 289 s.; 24 cm.
Electroacoustics : Microphones, Earphones, Loudspeakers / Gayford M.L.. - London : Newnes-Butterworths, 1970. - XI, 289 s.; 24 cm.