TY  - BOOK
AU  - Cassel Cleus-magnus
AU  -  Sarndal Carl-Erik
AU  -  Wretman Jan hakan
TI  - Foundations of inference in survey sampling
U1  - B2817, L71 
PY  - 1977///
CY  - New York    
PB  -  John Wiley       
KW  - inference
ER  -