Graph colourings / 
Roy Nelson and robin j. Wilson, eds. 
 - 143 páginas 
 - Pitman research notes in mathematics series ;  218 .
<br/><br/><label>ISBN: </label>0470215097 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cuarto color, Problema del--Congresos<br/>Teoría de grafos--Congresos
<br/><br/><label>LC Class. No.: </label>QA166  / G683