Borwick, John Loudspeaker and headphone handbook edited by John Borwick - London Butterworths 1988 - 573 p. : ill. ISBN: 0408013877 Subjects--Topical Terms: HEADPHONES - HANDBOOKS, MANUALS, ETCLOUDSPEAKERS - HANDBOOKS, MANUALS, ETC LC Class. No.: TK 5983.5 Lou