TY  - BOOK
AU  - Singer,Peter
TI  - Etica práctica
AV  - BJ1012 .S49
U1  - 170 
PY  - 1984///
CY  - Barcelona
PB  - Ariel
KW  - Social ethics
KW  - Local
KW  - Ethics
N1  - Translated of : Practical Ethics; Includes index
ER  -