TY  - BOOK
AU  - Lyndon,Roger C.
AU  - Schupp,Paul E. 
TI  - Combinatorial group theory
SN  - 9783540411581
U1  - 512.2 
PY  - 2001///
CY  - New York
PB  - Springer
KW  - Combinatorial group theory
N1  - Includes index; Chapter I. Free Groups and Their Subgroups  
Chapter II. Generators and Relations 
Chapter III. Geometric Methods 
Chapter IV. Free Products and HNN Extensions  
Chapter V. Small Cancellation Theory
ER  -