A selection of problems in the theory of numbers. Translated from the Polish by A. Sharma. Sierpiński, Wacław, 1882-1969. Number theory. QA241 .S48 1964 512.81 SIS "A Pergamon Press book." Bibliography: p. 123-126. New York, Macmillan, 1964. 1964. 1964 Text 126 p. eng engpol Popular lectures in mathematics ; [v. 11] Popular lectures in mathematics (New York, N.Y.) ; v. 11.