TY - BOOK AU - Johnson,D.L. TI - Presentations of groups T2 - London Mathematical Society - Lecture note series ; 22 SN - 0521208297 U1 - 512.2 22 PY - 1976/// CY - Cambridge [Eng.], New York PB - Cambridge University Press KW - Presentations of groups (Mathematics) N1 - Includes index; Bibliography: p. 196-197 ER -