TY  - BOOK
AU  - Wilson,Robin J..
AU  - Watkins,John J..
TI  - Graphs : an introductory approach,a first course in discrete mathematics / 
SN  - 0471615544
U1  - 511.5 
PY  - 1990///
CY  - New York : 
PB  - John Wiley , 
KW  - GRAPH THEORY
N1  - NULL
ER  -