000 00332nam a2200145Ia 4500
020 _a0000000000
082 _b1717
_a500
100 _a"PUFFER RUTH"
245 0 _aPRACTICAL STATISTICS
260 _bMCgraw-hill
_aNew york
_c1994
300 _a238
944 _cBK
999 _c394448
_d394448