TY  - BOOK
AU  - Massey,William S.
TI  - Algebraic topology: an introduction 
T2  - Graduate Texts in Mathematics, 56. 
SN  - 0387902716
U1  - 514.2 23
PY  - 1977///
CY  - New York
PB  - Springer
KW  - Algebraic topology
N1  - Includes bibliographies and index
ER  -