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Post-conference Communique
International Soil Conservation Organisation. Conference
其他書名
7th ISCO Conference Sydney : People Protecting Their Land, Sydney, Australia, 28-30 Sept. 1992
出版
External Relations, Department of Conservation and Land Management
, 1992
URL
http://books.google.com.hk/books?id=iW1WuAAACAAJ&hl=&source=gbs_api