000			003880000a22001570004500
245			_aIntroduction to statistics
100			_aWalpole, Ronald E.
250			_a2nd rev. ed.
260			_aNew York _bMacmillan _c1974
300			_axi, 340p. : tables
500			_aExercises and answers included
020			_a0029798906
080			_a519.2 _bW3
041			_aEN
942			_cBK _01
999			_c114721 _d114721