Watson, F.R.
Sound proof partitions : an investigation of the acoustic properties of various building materials with practical applications - Urbana University of Illinois 1922 - 85 p., ill. - University of Illinois Bulltin No.127 .
69.022.5:699.844 / W3
Sound proof partitions : an investigation of the acoustic properties of various building materials with practical applications - Urbana University of Illinois 1922 - 85 p., ill. - University of Illinois Bulltin No.127 .
69.022.5:699.844 / W3