TY  - BOOK
AU  - Gupta, C.B.
TI  - An Introduction to statistical methods
SN  - 9788125916543
AV  - HA29 .G78 2004
PY  - 2004///
CY  - New Delhi
PB  - Vikas Publishing House Pvt Ltd.
KW  - Statistics - social science
ER  -