TY  - BOOK
AU  - Bergeron, F et.al.
AU  - Labelle, G
TI  - Combinatorial Species and Tree-Like Structures
T2  - Encyclopedia of Mathematics and its Applications No.67
SN  - 9780521573238
U1  - 511.5 
PY  - 1998///
CY  - Cambridge
PB  - Cambridge University Press
ER  -