TY  - BOOK
AU  - Hatcher, Allen
TI  - Algebraric topology
SN  - 9780521541862
U1  - 515.14 
PY  - 2003///
CY  - New York
PB  - Cambridge University Press
KW  - ALGEBRA
KW  - VAN KAMPEN'S THEOREM
N1  - Includes appendix, bibliography, and index. (Ref.sec)
ER  -