TY  - BOOK
AU  - Harary, Frank
TI  - Graph theory
SN  - 8185015554
U1  - 511.5 
PY  - 2001///
CY  - New delhi
PB  - Narosa publishing house
KW  - Mathematics
KW  - Graphs
KW  - Covering
KW  - Diagraphs
ER  -