E. Dynkin, V. Uspensky Mathematical Conversations. Tasks about multicolor coloring. Tasks from number theory. Random wandering In Russian/Dynkin E., Uspenskiy V. Matematicheskie besedy. Zadachi o mnogotsvetnoy raskraske. Zadachi iz teorii chisel. Sluchaynye bluzhdaniya GITTL Mathematical Circle Library 1952, 288 p. Please contact us for details on condition of available copies of the book. SKUalb7853bb677f4bde10