TY  - BOOK
AU  - Magnus,Wilhelm
AU  - Karrass,Abraham
AU  - Solitar,Donald
TI  - Combinatorial group theory: presentations of groups in terms of generators and relations
SN  - 0486438309
U1  - 512.2 M275C2 
PY  - 2004///
CY  - New York
PB  - Dover
KW  - Nielsen transformations
KW  - Commutator calculus
ER  -