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  • 1965-1969  (1)
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    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 213 (1967), S. 902-903 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Table 1. CHARACTERISTICS OF HUMIC ACIDS Sample Origin Extraction No. Purifying procedure Elementary analysis (per cent) C H N ash 1 Podzol 0-5 normal Precipitation, 2 soil Black sodium hydroxide after centrifugation, dialysis 40-32 4-12 3-43 7.9 soil decalcitation 41-59 4-26 2-15 10-1 with ...
    Type of Medium: Electronic Resource
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