Ball, Walter William Rouse, 1850-1925.

Mathematical recreations & essays, revised by H.S.M. Coxeter... - 11th ed. - New York, The Macmillan company, [1963,1939]. - xvi,418 p., illus,diags. 20 1/2 cm

Bibliographical foot-notes.

Arithmetical recreations. -Geometrical recreations.-Problems. -CHess board recreations.-Magic squares. -Map coloring Problems. Unicursal problems.-Kirkman's school-girls problems. -Miscellaneous problems.-Three classical geometrical problems-Calculation prodigies. -Cryptography and cryptanalysis.


Mathematical recreations.
Geometry-Problesm, --Famous.
Cryptography.
Cliphers.

QA95 B2 1939