a tool for social research Healey, Joseph F. creator text Belmont, CA Wadsworth, Thomson Learning c2002 6th ed. monographic xxi, 521 pages : Illustrations ; Includes index. Social sciences - statistical methods Statistics HA 29 HEA 0534557856 http://www.loc.gov/catdir/enhancements/fy1515/2001017976-b.html http://www.loc.gov/catdir/enhancements/fy1515/2001017976-d.html http://www.loc.gov/catdir/enhancements/fy1515/2001017976-t.html http://www.loc.gov/catdir/enhancements/fy1515/2001017976-b.html http://www.loc.gov/catdir/enhancements/fy1515/2001017976-d.html http://www.loc.gov/catdir/enhancements/fy1515/2001017976-t.html