Broch, Jens Trampe The application of the Brüel & Kjaer Measuring Systems to acoustic noise measurements / by Jens Trampe Broch. - Naerum : Brüel & Kjaer, 1975. - 203 p. : ill. ; 21 cm. ISBN: 8787355000 Subjects--Topical Terms: Noise -- Measurement. Sound -- Measurement-- Measuring instruments. Dewey Class. No.: 620.23 BRO