TY  - BOOK
AU  - Henry  H. Crapo
AU  -  Gian-Carlo Rota, 
TI  - On the foundations of combinatorial theory ; Combinatorial geometries
U1  - 516.13 
PY  - 1970///
CY  - Cambridge
PB  - M I T Press
N1  - Henry  H. Crapo & Gian-Carlo Rota: On the foundations of combinatorial theory ; Combinatorial geometries.  Cambridge.  M I T Press, 1970.--(516.13CRA)
ER  -