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- Irrigation farming -- Lower Columbia River Valley (Or. and Wash.) 1
- Irrigation farming -- Oregon -- Gilliam County -- Costs 2
- Irrigation farming -- Oregon -- Morrow County -- Costs 2
- Irrigation farming -- Oregon -- Umatilla County -- Costs 2
- Irrigation farming -- Research -- Columbia River Watershed 1
- Irrigation farming -- Research -- Lower Columbia River Valley (Or. and Wash.) 3
- Irrigation farming -- Research -- Oregon 1
- Irrigation farming -- Research -- Oregon, Central 3
- irrigation methods 1
- Irrigation performance 1
- Irrigation scheduling 1
- irrigation scheduling 1
- Irrigation water 1
- Irs 1
- IRSL dating 1
- Irvington-Moore Kiln Scan 1
- IS-curves 1
- IS711 transposition 1
- Ischaemia/reperfusion injury 1
- ischemic stroke 1