Books by Gerhard Ringel

Cover of Topics in combinatorics and graph theory

Topics in combinatorics and graph theory

by Gerhard Ringel, Rudolf Henn

1990
Cover of Map color theorem

Map color theorem

by Gerhard Ringel

1974
Cover of Situationsbewältigung durch Fragen

Situationsbewältigung durch Fragen

by Erwin Ringel, Gerhard Brandl

1977
Färbungsprobleme auf Flächen und Graphen

Färbungsprobleme auf Flächen und Graphen

by Gerhard Ringel

1959

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