TY  - BOOK
AU  - CLEFF Thomas
TI  - Exploratory data analysis in business and economics :  An introduction using SPSS, Stata and Excel   
SN  - 9783319015170
U1  - X:(B28):(D6,9(B), Q1 
PY  - 2011///
CY  - Heidelberg
PB  - Springer          
KW  - Economics
ER  -