TY  - BOOK
AU  - Townsend,Michael  .
TI  - Discrete mathematics : applied combinatorics and graph theory / 
SN  - 0805393552
U1  - 510 
PY  - 1987///
CY  - Tokyo : 
PB  - The Benjamin/Cummings Publishing , 
KW  - MATHEMATICS
N1  - Includes index
ER  -