000 00397nam a2200145Ia 4500
008 230524s9999 xx 000 0 und d
040 _cUDSM
050 _aPAM QA166.T5
100 1 _aThomas, Joseph Miller
_eAuthor
245 1 4 _aThe four color theorem
260 _aDurham, North Carolina :
_c1969.
300 _a10p.
_b: ill.
_c; 26cm.
650 _aFour color problems
942 _2lcc
_cPAM
_n0
999 _c79560
_d79560