TY  - BOOK
AU  - Harary,Frank
ED  - Graph Theory Conference
TI  - Proof techniques in graph theory: proceedings of graph theory conferenc held at Hungary, February 2, 1968 
U1  - 512.5 
PY  - 1969///
CY  - New York
PB  - Academic Press
KW  - Graph theory
KW  - Congresses
ER  -