000			00397nam a2200157Ia 4500
008			180710s9999 xx 000 0 und d
020			_a154873
082			_a519.5 _bWAL
100			_aWalker, Helen M.
245			_aElementary statistical methods
250			_a1st ed., rev.
260			_aNew York _bHenry Holt _c1958
300			_axvi, 302 p.
650			_aStatistical mathematics
942			_cR
999			_c62468 _d62468