LEADER 01064nam a2200301 i 4500 001 991001101209707536 005 20020507183301.0 008 981201s1974 de ||| | eng 035 $ab10801066-39ule_inst 035 $aLE01307043$9ExL 040 $aDip.to Matematica$beng 082 0 $a511.5 084 $aAMS 05C10 100 1 $aRingel, Gerhard$058594 245 10$aMap color theorem /$cGerhard Ringel 260 $aBerlin :$bSpringer-Verlag,$c1974 300 $axii, 191p. ;$c24 cm. 490 0 $aGrundlehren der mathematischen Wissenschaften = A series of comprehensive studies in mathematics,$x0072-7830 ;$v209 650 0$aCombinatorial analysis 650 0$aFour color problem 650 0$aGraph theory 650 0$aTopology 907 $a.b10801066$b23-02-17$c28-06-02 912 $a991001101209707536 945 $aLE013 05C RIN11 (1974)$g1$i2013000104881$lle013$o-$pE0.00$q-$rl$s- $t0$u0$v0$w0$x0$y.i10904979$z28-06-02 996 $aMap Color Theorem$9384938 997 $aUNISALENTO 998 $ale013$b01-01-98$cm$da $e-$feng$gde $h0$i1