TY  - BOOK
AU  - Barnett,Vic;
TI  - Sample Survey: Principles& methods
SN  - 0340545534
U1  - 519.5BAR 1991. 
PY  - 1991///
CY  - London
PB  - Arnold.
KW  - Mathemetics
N1  - Includes Appendix,Bibliography and index
ER  -