00591nam a2200205 a 450000500170000002000180001708200150003510000160005010000280006624500290009426000420012330000340016549000660019950000510026560000080031663000170032463000320034185600060037385600060037920251203112548.0  a9780198528173  a511.5bHEL  aHell, Pavol  aNešetřil, Jaroslav.  aGraphs and homomorphisms  aOxfordbOxford University Pressc2004  axii, 244 p.bill.c24 cm.bHB  aOxford lecture series in mathematics and its applicationsd28  aIncludes bibliographical references and index.  bc_  aGraph theory  aHomomorphisms (Mathematics)  f_  a_