An introduction to groups / David Asche. Asche, David. Group theory. QA171 .A824 1989 512.22 19 ASI Includes index. Bristol, England ; Philadelphia : A. Hilger ; Cambridge, England : ESM, c1989. c1989. 1989 Text viii, 89 p. : http://www.loc.gov/catdir/enhancements/fy0668/88039831-d.html eng A Computer illustrated text