TY  - BOOK
AU  - Allenby, R B J T 
AU  -  Slomson, Alan
TI  - How to Count: An Introduction to Combinatorics
SN  - 9781420082609
U1  - 511.6 
PY  - 2011///
CY  - Boca Raton
PB  - CRC Press
KW  - Mathematics
ER  -