TY  - GEN
AU  - Trotter, William T
TI  - Combinatorics and Partially Ordered Sets 
T2  - Johns Hopkins Series in The Mathematical Sciences
SN  - 9780801869778
PY  - 1992///
CY  - London
PB  - The Johns Hopkins University Press
KW  - Combinatorial Analysis
KW  - Partially Ordered Sets
N1  - Paperback
ER  -