TY  - BOOK
AU  - Pillai, R S N.
AU  - Bagavathi.
TI  - Statistics : : theory and practice 
SN  - 8121904315
U1  - 519 1
PY  - 2003///
CY  - New Delhi
PB  - S Chand and Company Ltd
KW  - Statistical survey
KW  - Sample design
KW  - Correlation
ER  -