TY  - BOOK
AU  - Malik, D.S. 
AU  - Sen, M.K. 
TI  - Discrete mathematics 
SN  - 978-81-315-1866-3
U1  - 511 
PY  - 2018///
CY  - Delhi
PB  - Cengage learning 
KW  - Mathematics
KW  - discrete
ER  -