Partial differential equations in physics : Tr. by Ernst G. Straus. Print Vol. - I, Partial differential equations in physics / Partielle Differentialgleichungen der Physik. English. Sommerfeld, Arnold, 1868-1951. 7366 Differential equations, Partial. 7369 Mathematical physics. 820 QA3 .P8 vol. 1 531 SOM Includes Index. New York : Academic Press, c1949. c1949. 1949 Text xi, 335 p. eng engger Pure and applied mathematics (Academic Press) 1 7367 His lectures on theortical physics, v.6. Sommerfeld, Arnold, 1868-1951. Lectures on theoretical physics ; v.6. 7370