TY  - BOOK
AU  - Helen. M Walker
TI  - Elementary Statistical Methods
U1  - 519.5 
PY  - 1943///
CY  - New York
PB  - Henry Holt and Co
N1  - Helen. M Walker: Elementary Statistical Methods.  New York.  Henry Holt and Co, 1943.--(519.5WAL)
ER  -