01075nam2-2200361li-450-99000323182020331620090429162005.0000323182USA01000323182(ALEPH)000323182USA0100032318220090429d1981----km-y0itay50------ba20001109d1994----km-y0itay0103----baengUS||||||||001yy<<Vol. 1:>> Unsolved problems in number theoryRichard K. Guysecond editionNew York [etc.]Springercopyr. 1981XVIII, 161 p.23 cm2001200100100239122001Unsolved problems in intuitive mathematicsTeoria dei numeri512.7GUY,Richard K.47477ITAsalbcISBD990003231820203316510 UPI/1 (C)17603/CBS51000218505BKSCIRSIAV79020090429USA011620Unsolved problems in number theory81813UNISA