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methoden > research methods (en) > surveys (en) > geochemical surveys (en)

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  • A survey involving the chemical analysis of systematically collected samples of rock, soil, stream sediments, plants, or water; this expression may be further modified by indicating specif. the material sampled, as, for example, geochemical soil survey. (en)

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http://aims.fao.org/aos/agrovoc/c_4ded6022

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