000 00646pam a2200229a 44500
999 _c47567
_d47567
003 OSt
005 20190424143755.0
008 170807b1998 xxu||||| |||| 00| 0 eng d
020 _a9780387984971
040 _cIGIDR
082 _a511.5
_bFRI
_220
100 _aFritsch, Rudolf
245 _aThe Four-color theorem :
_bHistory, topological foundations and idea of proof /
_cRudolf Fritsch and Gerda Fritsch
260 _aNew York
_bSpringer-Verlag
_c1998
300 _axvi, 260p
650 _aMathematics
650 _aFour-color problem
700 _aFritsch, Gerda
700 _aPeschke, Julie
_eTr.
906 _a48312
942 _2ddc
_cBK