TY  - BOOK
ED  - Symposium on Advances in Methods of Data Collection, Validat
ED  - Symposium on Advances in Methods of Data Collection, Validat
TI  - Retrival and analysis: proceedings
U1  - 000SA.05 
PY  - 1980///
CY  - Calcutta
PB  - Indian Statistical Indstitute
KW  - Statistical data analysis
ER  -