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Illustrated description of band pass filters covering range of 80-8000 cps; apparatus designed for acoustic measurements in buildings.
Illustrated description of band pass filters covering range of 80-8000 cps; apparatus designed for acoustic measurements in buildings.
Universal acoustic filter
Et universalfilter
Nielsen, A.K. (Autor:in)
Ingenioren ; 59
1950
4 pages
Aufsatz (Zeitschrift)
Dänisch
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