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1985年9月3日~5日在日本筑波科学城召开土壤侵蚀、泥石流及灾防国际学术讨论会.这次会议由联合国粮农组
International Symposium on Soil Erosion, Debris Flow and Disaster Prevention was held in Tsukuba Science City, Japan from September 3 to September 5, 1985. The meeting was organized by the UN Food and Agriculture Organization