TY  - BOOK
AU  - Billington, Elizabeth J..
TI  - Combinatorial Mathematics IX / 
SN  - 3-540-11601-X
U1  - B217p8,N81 
PY  - 1980///
CY  - Berlin-33 : 
PB  - Springer-Verlag , 
KW  - Mathematics
ER  -