| item | description | category | filter | more on... |
| IWR | Institute of Water Research | Edu./Universities |
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| IWR | Institute of Water Resources | Non-Profit Organizations |
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| IWR | Internationale Wagenliste für Reisezüge | Other/Transportation |
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| IWR | Isolated Word Recognition | Uncategorized |
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| IWR | US Army Corps of Engineers Institute for Water Resources | Governmental/Military |
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