"An elementary treatise on sound being the second volume of a course of natural philosophy, designed for the use of high schools and colleges"@en . "An elementary treatise on sound; being the second volume of a course of natural philosophy, designed for the use of high schools and colleges" . . "An elementary treatise on sound being the second volume of a course of natural philosophy : designed for the use of high schools and colleges"@en . . . . . . . . . . . "An elementary treatise on sound : being the second volume of a course of natural philosophy, designed for the use of high schools and colleges"@en . . "Bibliography"@en . . . .