TY  - BOOK
AU  - Chakraborty, Arnab
TI  - Short Course in +2 Level Mathematics Permutation and Combination
SN  - 9789384106263
U1  - 511.64/CHA/S 
PY  - 2015///
CY  - Kolkata
PB  - Levant
KW  - Permutation
KW  - Combintation
ER  -