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Item Title	Lake Name	Item
Trend of transparency	Lake Shikotsu	asi16-02.gif
Trend of transparency (1962-1980)	Lake Shinji	asi42-02.gif
Trend of transparency and pH (1976-1985)	Sagami Reservoir	asi18-02.gif
Year-to-year variation of transparency, pH, COD. T-N and T-P	The West Lake	asi53-05.gif
WLDB data list

Item Category : E. Water Quality

Item Name : E10 Past Trends
