000 00327nam a2200157Ia 4500
082 _a511.5
_bR581.MC
100 _aRingel, Gerhard
245 _aMap color theorem
_b
260 _aBerlin
_bSpringer-Verlag
_c1974
300 _axii, 191p.
500 _a
690 _a
700 _a
964 _a
_b
_c
_d
_e
_f
_g
921 _a8938
999 _c8938
_d8938