TY  - BOOK
AU  - Neiswanger, William Addision
TI  - Elementary statistical methods :   : As applied to business and economic data 
U1  - 519.5 
PY  - 1943///
CY  - New york
PB  - The Mac Milliam Co
KW  - Statistical methods
KW  - Averages
KW  - Time series
ER  -