White, Arthur T.
Graphs, groups and surfaces - Amsterdam North-Holland Publishing Company 1973 - 141 - North-Holland mathematics studies ; 8 .
B13:6 L3
519.17 WHI
Graphs, groups and surfaces - Amsterdam North-Holland Publishing Company 1973 - 141 - North-Holland mathematics studies ; 8 .
B13:6 L3
519.17 WHI