TY  - BOOK
AU  - 
ED  - Lamb, J.D. and Preece, D.A.
TI  - Surveys in combinatorics,1999
T2  - London Mathematical society lecture note series
SN  - 0521653762
U1  - 511.6 
PY  - 1999///
CY  - Cambridge
PB  - Cambridge University Press
ER  -