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Osswald, Franz Max. (29 August 1930AD) 1930. “Photographic Study Of Sound Propagation For An Auditorium Of Variable Size, Sectional Models (2/4)”. Zürich.
Osswald, Franz Max. (29 August 1930AD) 1930. “Photographic Study Of Sound Propagation For An Auditorium Of Variable Size, Sectional Models (3/4)”. Zürich.
Osswald, Franz Max. (29 August 1930AD) 1930. “Photographic Study Of Sound Propagation For An Auditorium Of Variable Size, Sectional Models (4/4)”. Zürich.
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