TY  - BOOK
AU  - Hansen, Vagn Lundsgaard
TI  - Braids and Coverings: selected Topics
SN  - 9780521387576
U1  - 514.224 HAN 
PY  - 1989///
CY  - Cambridge
PB  - Cambridge University Press
KW  - Braid theory
KW  - Covering spaces (Topology)
ER  -