TY  - BOOK
AU  - Leys,Wayne Albert Risser
TI  - Ethics for policy decisions: the art of asking deliberative questions 
T2  - Prentice-Hall philosophy series
PY  - 1952///
CY  - New York
PB  - Prentice-Hall
N1  - Bibliografia (p. 365-412) e indice
ER  -