Graphs and questionnaires /
Picard, Claude Francois.
Ault, J. C.
Lobenberg, M.
Aggarwal, N. L.
Amsterdam Oxford North-Holland Publishing Co.
1980
With answers to problems
Translation and revision of: 'Graphes et questionnaires'. Paris : Gauthier-Villars, 1972
Bibliography: p.401-419. - Includes index
Graph theory.