The gentle art of mathematics / [by] Dan Pedoe. With drawings by Griselda El Tayeb. Pedoe, Daniel. Mathematics Popular works. Mathematical recreations. QA93 .P4 1973 510 PEG Includes index. New York ; Middlesex : Dover Publications ; Penguin Books, c1958. c1958. 1973 Text 143 p. : http://www.loc.gov/catdir/enhancements/fy1206/73077445-d.html http://www.loc.gov/catdir/enhancements/fy1318/73077445-t.html eng