TY  - BOOK
AU  - Das, N G
TI  - Statistical methods combined edition (Vol I& II)
SN  - 9780070083271
U1  - 519.5 
PY  - 2009///
CY  - New Delhi
PB  - McGraw hill education
KW  - Mathematics
KW  - Statistics
N1  - reprint 2016
ER  -