TY  - BOOK
AU  - Freund John E
AU  -  Perles Benjamin M
TI  - Business statistics :  A first course   
U1  - B280bX, L4 
PY  - 1974///
CY  - New Jersey 
PB  - Prentic-Hall         
KW  - Statistics
N1  - Bibliography : P 321-22
ER  -