TY  - BOOK
AU  - Xu, Jinzhong
TI  - Flat covers of modules
SN  - 3-540-61640-3
U1  - 512.4 
PY  - 1996///
CY  - Berlin
PB  - Springer-Verlag
KW  - Algebra and number theory
KW  - Modules
ER  -