TY  - BOOK
AU  - Ballard, Desmond 
TI  - Discrete Mathematics 
SN  - 9781635495652
AV  - QA76.9 B18 2017 
PY  - 2017///
CY  - New York; NY : Larsen & Keller educ., 
PB  - Larsen & Keller 
KW  - Mathematics
KW  - Discrete functions
ER  -