TY  - BOOK
AU  - Levin,Oscar
TI  - Discrete mathematics: an open introduction 
T2  - Open textbook library
SN  - 9781534970748
U1  - 510 
PY  - 2017///]
CY  - [Scotts Valley, California]
PB  - CreateSpace Independent Publishing Platform
KW  - Mathematics
KW  - Graph theory
KW  - Computer science
N1  - Includes index
ER  -