N.Y., Oxford University Press, 1962, un volume in 8, relié en pleine toile éditeur, (3), 182pp.
---- EDITION ORIGINALE ---- The meaning of an unsolved problem - Applied problems - problems concerning games - Geometrical problems - Arithmetical problems - Topological problems - probability and combinatorial problems - Problems of infinite sets - Variational problems - problems of analysis**7418/N5DE
Dunod 1965
in8, broche, bon etat d'usage, dos (haut, bas et jointures avec les plats) frotte, interieur propre, Dunod, 1965, 152p