Topics in the theory of group presentations / D. L. Johnson. Johnson, D. L. Presentations of groups (Mathematics) QA171 .J593 512.86 JOT Includes bibliographical references and indexes. Cambridge [Eng.] ; New York : Cambridge University Press, 1980. 1980. 1980 Text vii, 311 p. : http://www.loc.gov/catdir/enhancements/fy0808/80040230-d.html http://www.loc.gov/catdir/enhancements/fy0808/80040230-t.html eng London Mathematical Society lecture note series ; 42 0076-0552 London Mathematical Society lecture note series ; 42.