TY  - BOOK
AU  - Thirkettle, G.L.
TI  - Wheldon's business statistics and statistical method
SN  - 0 273 02696 8
U1  - 310 
PY  - 1981///
CY  - London
PB  - Pitman, 
KW  - Statistical Methods
KW  - Statistics
ER  -