TY  - BOOK
AU  - N M Downie
AU  -  R W Heath
TI  - Basic statistical methods
SN  - 00604227310
U1  - 519.5 D751b 
PY  - 1974///]
CY  - New York
PB  - Harper & Row
KW  - Statistics.
KW  - Statistique
KW  -  Einführung
ER  -