Johns-Manville Corporation,. n.d. “Acoustical Correction”. How Correct Acoustical Values Can Be Provided For In Every Room In Which Good Hearing Conditions Are Necessary.
Kellogg, Peter Paul, and Arthur A. Allen. 1953. “Voices Of The Night ”. The Calls Of 34 Frogs And Toads Of The United States And Canada . Ithaca NY: Cornell University Records.
Jules Antoine Lissajous was a high-school teacher, then held prestigious administrative posts in the education system of various parts of France. He had trained in physics, and defended his dissertation on vibratory phenomena in 1850.
Kleinschmidt, Friedrich, and Wilhelm Albert Doegen. (07.01.1931AD) 1931. “Personal-Bogen Zu Laut-Aufnahme Nr.: La 1187”. Berlin: Lautabteilung, Preußische Staatsbibliothek Berlin.
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