Mechanics of deformable bodies : lectures on theoretical physics, vol. II / by Arnold Sommerfeld, tra. from the second German ed. by G. Kuerti. Vorlesungen über theoretische Physik. English Sommerfeld, Arnold, 1868-1951. Mathematical physics. QC20 .S66 531 SOM New York ; Academic Press, c1950. c1950. 1950 Text xi, 396 p. : eng