On cover: Engineering bulletin, Purdue university. vol. xvii, no. 3. May 1933.
Appendices (each with special t.-p): A bibliography on vibration and sound, selected from the electric railway viewpoint, 1932 [(p. 86-101) compiled by D. D. Ewing and his assistants]; A study of passenger preferences, submitted to Dr. G. C. Brandenburg as a report of an investigation in experimental psychology by Ammon Swope, 1930; The steadiness meter, by Ammon Swope, 1933; Tests of the holding power of upholstery fabrics, an investigation for the textile industries, by H. M. Jacklin and J. A. Askren 1931; Determination of resonant frequency for persons of different weights, by H. M. Jacklin and G. J. Liddell; Effects of varying the ratio between sprung and unsprung weight of a vehicle, abstract of a graduate thesis by C. C. Sun, 1931.