TY  - BOOK
AU  - Birman, Joans
TI  - BRAIDS, LINKS AND MAPPING CLASS GROUPS
U1  - 514.22 
PY  - 1974///
CY  - Princeton
PB  - Univ. Press
KW  - Combinatorial Topology
N1  - Bibl. : P. 221-226
ER  -