Evaluation of sound reduction in building structures by means of grading curves. Zur Bewertung der Schalldämmung von Bauteilen nach Sollkurven. (Abridged translation from) Acustica, 1965, 15 (5), 264-70.
Goesele, K.
Garston, 
1966.
[With a bibliography.]
Reproduced from typewriting.