TY  - BOOK
AU  - Wallis, W.D.  .
TI  - Beginner`s guide to graph theory / 
SN  - 978-81-8489-806-4
U1  - B23:6 
PY  - 2007///
CY  - Berlin : 
PB  - Birkhauser , 
KW  - Mathematics- Graph theory
ER  -