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Topic
- Sewage--Purification 3
- Technology 3
- Economics 2
- Water--Purification 2
- Building 1
- Groundwater 1
- Gush Dan (Israel) 1
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Water Basin
- Jordan River >> Israel 3
Publisher
- Tikhnun ha-mayim le-Yiśraʼel be-ʻe.m. 3