TY  - BOOK
AU  - Spiegel, Murray R.
AU  - Spiegel, Murray R.
AU  - Stephens, Larry J.
TI  - Theory and problems of statistics.-3rd ed. 
PY  - 1999///
CY  - New York
PB  - Mc Graw Hill
KW  - Theory and problems of statistics
ER  -