TY  - BOOK
AU  - Ullman Neil R
TI  - Elementary ststistics :  An Applied approach   
SN  - 0471021059
U1  - B28, L8 
PY  - 1978///
CY  - New York
PB  - John Wiley        
KW  - Statistics
N1  - Bibliography : p353-56
ER  -