00844nam0-22003011i-450 99000083647040332120190508105225.0000083647FED01000083647(Aleph)000083647FED0100008364720001010d1973----km-y0itay50------baengy-------001yyGraphs, groups and surfacesA.T. WhiteAmsterdamNorth-Holland Publishing Company1973X, 142 p.24 cmNorton-Holland Mathematics Studies8511.5White,Arthur T.<1939- >40977ITUNINARICAUNIMARCBK99000083647040332102 53 C 253606FINBNFINBNGraphs, groups and surfaces78920UNINAING01