Table of contents5.1 Colouring Maps and Planar Graphs5.2 Colouring Vertices5.3 Colouring Edges5.4 List Colouring5.5 Perfect Graphs5.1 Colouring Maps and Planar Graphs 5.2 Colouring Vertices 5.3 Colouring Edges 5.4 List Colouring 5.5 Perfect Graphs