BS 3045:1958
Original price was: $264.16.$132.00Current price is: $132.00.
The relation between the sone scale of loudness and the phon scale of loudness level
BSI Group , 11/14/1958
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Original price was: $264.16.$132.00Current price is: $132.00.
Original price was: $264.16.$132.00Current price is: $132.00.
Original price was: $264.16.$132.00Current price is: $132.00.
Original price was: $264.16.$132.00Current price is: $132.00.
Original price was: $264.16.$132.00Current price is: $132.00.
Original price was: $264.16.$132.00Current price is: $132.00.
Original price was: $264.16.$132.00Current price is: $132.00.
Original price was: $264.16.$132.00Current price is: $132.00.