00273    a2200109   4500020001500000082001500015100002600030245003300056260004000089300001700129650001700146  a0824787900  a511.5bGRA  aRees, Rolf S. - eed.  aGraphs, matrices and designs  aNew YorkbMarcel Dekkerc1993g1993  axv,314c25cm  aGRAPH THEORY