TY  - BOOK
AU  - Das,M.N., x
AU  - x
TI  - Statistical methods and concepts: x
SN  - 8122481198
U1  - 310-D229s 
PY  - 1989///
CY  - New Delhi ; Calcutta
PB  - Wiley
KW  - Statistics
KW  - Probabilities
N1  - Includes
ER  -