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_aMartín, Dean F. _971726 |
| 245 | 1 | 2 | _aA convenient method of anlysis of humic acid in fresh water |
| 500 | _aSobretiro de: Environmental Letters 1(1): 49-52, 1971 | ||
| 590 |
_aBATCH-UPD _b10 _c20130110 _lUCH01 _h1239 |
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_aAcido humico. _9588 |
| 650 | 1 | 4 |
_aAgua _xAnálisis. _92280 |
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