TY  - BOOK
AU  - Picard, Claude Francois
TI  - GRAPHS AND QUESTIONNAIRES
U1  - 511.5 
PY  - 1980///
CY  - Amsterdam
PB  - North-Holland
KW  - Graph Theory
N1  - Bibliography : P. 401-419; Abridged Translation Of Graphs Et Questionnaires
ER  -