TY  - BOOK
AU  - Levin,Oscar
ED  - Open Textbook Library,
TI  - Discrete mathematics: an open introduction 
T2  - Open textbook library
SN  - 9781792901690 (pbk.)
AV  - QA39.3 .L48 2019
PY  - 2019///
CY  - Greely
PB  - Oscar Levin
KW  - Mathematics
N1  - Includes index
ER  -