000 00288nam a2200121Ia 4500
008 160710s1950 xx 000 0 und d
082 _a311 PUF
100 _aPUFFER,R.R
245 _aPRACTICAL STATISTICS
260 _bMcGRAW-HILL BOOK CO., INC.
_c1950
300 _a238
942 _2ddc
_cB
999 _c17831
_d17831