TY  - BOOK
AU  - Berge, C.
AU  - Sheehan, John
TI  - Principles of combinatorics
U1  - 511.6 BER 
PY  - 1971///
CY  - New York
PB  - Academic Press
KW  - Combinatorial analysis
N1  - First published in the French language in 1968 under the title: prin ciple de cmbinatoire
ER  -