TY  - BOOK
AU  - Hammer, Peter L.
AU  - Mendelsohn, Eric
TI  - Annals of Discrete Mathematics ( 15 ): : Algebraic and Geometric Combinatorics
SN  - 0444863656
U1  - 511.6 
PY  - 1982///
CY  - New York
PB  - North-Holland Publishing Company
ER  -