文
论文分享
演练场
杂货铺
论文推荐
字
编辑器下载
登录
注册
D. Yanggen
发表
Protecting groundwater quality by managing local land use
S. Born, D. Yanggen, 1990 .
Common Property as a Concept in Natural Resources Policy
D. Bromley, S. Ciriacy-Wantrup, R. Bishop, 1975 .