TY  - BOOK
AU  - Gupta , S.P. and Gupta , Archana
TI  - Statistical Methods
SN  - 978-81-8054-596-2
U1  - 519.5   Gup.P9 18th. Ed.
PY  - 2009///
CY  - New Delhi
PB  - Sultan Chand and Sons
ER  -