TY  - BOOK
AU  - Harary Frank ed.
ED  - Conference on Graph Theory( 2nd : 1968 : Ann Arbor )
ED  - Conference on Graph Theory 2nd
TI  - Proof techniques in graph theory : proceedings
U1  - 511.5 
PY  - 1969///
CY  - NY
PB  - Academic Press
KW  - Graph theory
ER  -