Devlin, Keith The millennium problems : the seven greatest unsolved mathematical puzzles of our time / Keith Devlin - London : Granta Books, c2002. - x, 237 p. ; ill. ; 24 cm. ISBN: 9781862077355 LCCN: Subjects--Topical Terms: MathematicsPopular worksMathematics LC Class. No.: QA93 / .D47 2002