TY  - BOOK
AU  - Conway,Freda, x
AU  - x
TI  - Sampling and introduction for social seientists: x
SN  - x
U1  - 519/COS 
PY  - 1967///
CY  - Lond.
PB  - Allen & Unwin
KW  - Sampling
KW  - Statistics
N1  - x
ER  -