共 5 条
[1]
Bray T.J., Soaring High: New Strategies for Environmental Giving, (2005)
[2]
Dunlop B.N., Clearing the Air: How the People of Virginia Improved the State's Air and Water Despite the EPA, (2000)
[3]
Hayward S.R., Index of Leading Environmental Indicators, (2005)
[4]
Private Land Conservation, Natural Resources Journal, 44, 2, (2004)
[5]
Scarlett L., Citizen Stewardship and the Environment, Society, 41, 6, pp. 7-11, (2004)