TY  - BOOK
AU  - Leach, Chris.
TI  - Introduction to Statistics :Nonparametric Approach for the social Science / 
SN  - 0 471 99742 0
U1  - B28 
PY  - 1969///
CY  - New York : 
PB  - John Wiley & Sons , 
KW  - Statistics <Probability>
ER  -