TY  - BOOK
AU  - Greenberg,Marvin J.
AU  - Harper,John R.
TI  - Algebraic topology: a first course 
T2  - Mathematics lecture note series
SN  - 0805335579 (paperback)
PY  - 1981///
CY  - [S.l.]
PB  - Westview Press
N2  - Great first book on algebraic topology. Introduces (co)homology through singular theory
UR  - http://www.amazon.com/exec/obidos/ASIN/0805335579/chopaconline-20
ER  -