TY  - BOOK
AU  - Jasay, Anthony De
TI  - Social Contract, Free Ride: 
SN  - 0198239122
AV  - HB846.5.D4 
CY  - New York
KW  -  Contracte social
KW  -  Estat
KW  - Be?ns col�lectius
KW  - Economic theory. Demography
ER  -