Harry F. Olson – Acoustical Engineering

The bible of acoustics. The pdf is of a book which i read a lot at the Technical library of the University of Ljubljana in the early 1980s. First published in May 1957 – based on an earlier work entitled Elements of Acoustical Engineering, by Harry F. Olson, copyright 1940, 1947 by D. Van Nostrand Company, Inc.

https://ethw.org/Harry_Olson

Doubled here with some other sites.

HarryOlson_AcousticalEngineering.pdf