Graphs, groups and surfaces. [By] Arthur T. White. White, Arthur T. Graph theory. Group theory. Combinatorial topology. QA166 .W45 311.26 WHG Bibliography: p. 136. Amsterdam, North-Holland Pub. Co.; New York, American Elsevier Pub. Co., 1973. 1973. 1973 Text x, 142 p. eng North-Holland mathematics studies ; 8