TY  - DATA
AU  - Marcus, Daniel A.
TI  - Combinatorics: a problem oriented approach 
T2  - Classroom Resource Materials, 
SN  - 9780883859810 (online)
PY  - 1998///
CY  - Washington, DC
PB  - Mathematical Association of America
KW  - Combinatorial analysis
N1  - Includes index
UR  - https://doi.org/10.1090/clrm/008
ER  -