Sound absorption coefficient of architectural acoustical material.
| Údar corparáideach: | |
|---|---|
| Formáid: | LEABHAR |
| Teanga: | English |
| Foilsithe / Cruthaithe: |
[New York
1957]
|
| Sraith: | Its Bulletin
18, 1958 |
| Ábhair: |