TY - BOOK AU - PARMANENT, Juhani AU - SIPARI, Pekka; UOSUKAINEN, Seppo AU - TI - Sound insulation of multi-storey houses summary of impact sound insulation T2 - VTT Publications\\VTT, Espoo\ SN - 951-38-5362-4 CY - Espoo KW - documentație AV - III 15156 ER -