TY  - BOOK
AU  - N. M. Downie
AU  -  R. W. Heath, 
TI  - Basic statistical methods
U1  - 519.5 
PY  - 1970///
CY  - New York
PB  - Harper International Education, Harper & Row Publishers
N1  - N. M. Downie & R. W. Heath: Basic statistical methods.  (3rd Edition.)  New York.  Harper International Education, Harper & Row Publishers, 1970.--(519.5DOW)
ER  -