TY  - BOOK
AU  - Simpson, George
AU  - Kafka, Fritz
TI  - Basic statistics: a textbook with special reference to economics and business
U1  - 311 21st
PY  - 1952///
CY  - New York
PB  - W W Norton
KW  - Statistics; Economics-Statistical methods; Sampling (Statistics); Correlation (Statistics)
ER  -