TY  - BOOK
AU  - Symposium on Combinatorial Structures and their applications, Villa Madruzzo, October 20-25, 1980
AU  - Barlotti, A.
TI  - Combinatorial and geometric structures and their applications: ; papers 
U1  - 516 
PY  - 1982///
CY  - Amsterdam
PB  - North-Holland
ER  -