Elementary number theory,/ Edmund Landau. Translated by Jacob E. Goodman. With exercises by Paul T. Bateman and Eugene E. Kohlbecker. Landau, Edmund, 1877-1938. Number theory. QA241 .L243 1966 512.81 LAE New York, Chelsea Pub. Co. [1966] [1966] 1966 Text 256 p. eng