TY  - BOOK
AU  - THIRKETTLE, G.L
TI  - Wheldon's Business Statistics and Statistical Method: Wheldon's Business Statistics and Statistical Method._6th Ed, London : E.L.B.S., 1969
U1  - 311 
PY  - 1969///
CY  - London
PB  - E.L.B.S.
ER  -