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  - 0486632814
U1  - 512.22,D,mag 
PY  - 1966///
CY  - New York
PB  - Dover
ER  -