00386nam a2200157Ia 4500003000400000005001700004008004100021020001800062040000900080082001700089100001600106245005300122250001200175260003200187300000900219OSt20200810120016.0190216s9999||||xx |||||||||||||| ||und||  a9788184898064  coclc  a511.5bWAL/B  aWallis, W D 2aA Beginner's Guide To Graph Theory /cW D Wallis  a2nd Ed.  bBirkhauser,c2011.aBoston:  a260p