DEVLIN, KEITH. — Mathematics: The New Golden Age.

Harmondsworth: Penguin. 1988 (rep). "Offers a glimpse of the extraordinary vistas and bizarre universes opened up by contemporary mathematicians: the theory of knots and secret codes, Hitler's Tenth Problem and the Four-Colour Theorem, business planning techniques and strange number systems". Pp 287, some b/w illustrations. P/b. Illustrated covert. G+.