TY  - BOOK
AU  - Cornes Richard
AU  -  Sandler Todd
TI  - Theory of externalities, public goods and club goods
SN  - 0 521 30184 x
U1  - X:22, M6,N6/TD3 
PY  - 1986///
CY  - New York
PB  - Cambridge University Press       
ER  -