01167nam a2200325 i 450099100147004970753620020507194038.0951004s1981 us ||| | eng 0387905936b10851860-39ule_instLE01312743ExLDip.to Matematicaeng512.7076AMS 11-01AMS 11-XXQA43.G88LC Guy, Richard K.537290Unsolved problems in number theory /Richard K. GuyNew York :Springer-Verlag,c1981xviii, 161 p. :ill. ;24 cmProblem books in mathematics,0941-3502Unsolved problems in intuitive mathematics ;1Includes bibliographies and indexesNumber theory-problems, exercises, etc..b1085186023-02-1728-06-02991001470049707536LE013 11-XX GUY11 (1981)12013000036663le013-E0.00-l- 01010.i1096336428-06-02Unsolved problems in number theory918424UNISALENTOle01301-01-95ma -engus 01