00983nam0-22003491i-450-9900014976004033210-444-50075-8000149760FED01000149760(Aleph)000149760FED0100014976020021108d2001----km-y0itay50------baengNLa---a---001yyGraphs of groups on surfaces: interactions and modelsT. WitheAmsterdamElsevierc2001xiv, 363 p.24 cmNorth-Holland mathematics studies188Teoria topologica dei grafi511.521White,Arthur T.<1939- >40977ITUNINARICAUNIMARCBK990001497600403321C-21-(18818307MA1MA105C1005-0157-01Graphs of groups on surfaces: interactions and models377347UNINA