Architectural acoustics /
by Paul R. Heyl.

APA Citation

Heyl, P. R., United States. Bureau of Standards. (1931). Architectural acoustics. Washington: U.S. Govt. Print. Off..

MLA Citation

Heyl, Paul R, and United States. Bureau of Standards. Architectural Acoustics. Washington: U.S. Govt. Print. Off., 1931.

Warning: These citations may not always be complete (especially for serials).