TY  - BOOK
AU  - Das, N. G. 
TI  - Statistical methods (Combined edition volume 1 & 2)
SN  - 9780070083271
U1  - 519.5 
PY  - 2017///
CY  - New Delhi
PB  - McGraw Hill Education
KW  - Statistical mathematics
KW  - Probability
KW  - Random varriables
N1  - Includes bibliographical references and index
ER  -