S31-045-1982
Статус: Дата введения в действие:
| Обозначение | S31-045-1982 |
|---|---|
| Заглавие на английском языке | ACOUSTICS. MEASUREMENT OF SOUND INSULATION OF BUILDING ELEMENTS AND IN BUILDINGS. LABORATORY MEASUREMENT OF AIRBORNE SOUND INSULATION OF SMALL-SIZED BUILDING ELEMENTS. |