TY  - BOOK
AU  - Wonnacott, T.H.
AU  - Wonnacott, R.J.
TI  - Introductory statistics: 5th edition
SN  - 9780471615187
PY  - 1990///
CY  - United States of America
PB  - John wiley & sons
KW  - Public Health
KW  - Research
ER  -