00278nam a2200109Ia 4500008004100000020001800041082001500059100001600074245003100090260003900121300000800160190710s9999    xx            000 0 und d  a81-87328-46-0  a511.5 Ar84  aArumugam, S 0aInvitation to graph theory  aChennaibScitech Publicatonsc2004  a137