Slot, G. From microphone to ear : modern sound recording and reproduction technique / Translated from Dutch by E. Harker - 4th ed. - Eindhoven : Philips Technical Library , 1965. - ix, 260 p. : ill. ; 21 cm. Subjects--Topical Terms: High-fidelity sound systems-------- Dewey Class. No.: 621.3818 SLO