TY  - BOOK
AU  - Gupta,S.P.
TI  - Practical statistics
SN  - 81-219-0624-5
U1  - 519.5 
PY  - 1994///
CY  - New delhi
PB  - S. Chand & company ltd.
KW  - Commerce
KW  - Practical statistics
ER  -