TY  - BK
AU  - Ostrom,E.
AU  - Gardner,R.
AU  - Walker,J.
TI  - Rules, games, and common-pool resources
SN  - 0-472-06546-7
U1  - 333.7 
PY  - 1993///
CY  - Michigan (USA)
PB  - University of Michigan Press, 
KW  - Natural resources
KW  - Public goods game
ER  -