TY  - BOOK
AU  - GUPTA S P
TI  - Elementary statistical methods
SN  - 9788180545962
U1  - B28, P9/TD 
PY  - 2014///
CY  -  New Delhi 
PB  - Sultan Chand & Sons      
N1  - Glossary: p 475-480; References: p 481
ER  -