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EA: HYDROLOGIC_PERSISTENCE
EE: PERENNIAL_OR_PERMANENT
| Status: | Item in ISO/IEC 18025 (EDCS) International Standard |
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| Status date: | 2014/02/14 |
| Additional comments: | 2005/06/07 Originally standardized. 2014/02/14 Deprecated (redundant with <EEL>PERENNIAL</EEL>). |
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