TY  - BOOK
AU  - Croom,Fred H,b.1941
TI  - Basic concepts of algebraic topology
SN  - 0387902880
PY  - 1978///
CY  - New York
PB  - Springer-Verlag
KW  - Algebraic topology
N1  - Includes index; Bibliography : p. 169-171
ER  -