TY  - BOOK
AU  - Northcott,D.G.
TI  - An introduction to homological algebra
SN  - 0-521-05841-4
PY  - 1972///
CY  - New York
PB  - Cambridge at the University Press
KW  - Algebra
KW  - Diferenciales
KW  - Algebra Homologica
ER  -