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Abandoned tanks (1) |
Binary land use (1) |
Gem mining (1) |
Gemstones (1) |
GIS (3) |
Groundwater recharge (1) |
Hambantota District (1) |
Patterns of gem occurrences (1) |
Sri Lanka (1) |
Water harvesting (1) |
Now showing items 1-10 of 3