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- Irrigation farming
- History 3
- Irrigation 3
- Agricultural ecology 1
- Agricultural pollution 1
- Agriculture 1
- Agriculture, Ancient 1
- Antiquities 1
- Control 1
- Cotton farmers 1
- Cotton trade 1
- Crops 1
- Crops and water 1
- Economic aspects 1
- Economic conditions 1
- Environmental aspects 1
- Environmental conditions 1
- Evapotranspiration 1
- Excavations (Archaeology) 1
- Food 1
- Human ecology 1
- Hunting and gathering societies 1
- Indians of South America 1
- Irrigation water 1
- Origin 1
- Plant remains (Archaeology) 1
- Plants, Cultivated 1
- Race relations 1
- Riparian areas 1
- Riparian ecology 1
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