00306    a2200121   4500020001500000082001500015100001600030245003300046260004200079300002200121650001700143700002400160  a8170234638  a511.5bCLA  aClark, John  aA first look at graph theory  aBombaybAllied publishersc1991g1995  axiv, 330p.c23cm.  aGraph theory  aHolton, Derek Allan