TY  - BOOK
AU  - Rozas J R Garcia
TI  - Covers and envelopes in the category of complexes of modules
SN  - 1-58488-004-X
U1  - 512.4 
PY  - 1999///
CY  - Boca Raton
PB  - Chapman & Hall
KW  - Modules
ER  -