Comparison of chemical characteristics of Type A humic acids extracted from subsoils of paddy fields and surface ando soils

Author: Maie N.   Watanabe A.   Hayamizu K.   Kimura M.  

Publisher: Elsevier

ISSN: 0016-7061

Source: Geoderma, Vol.106, Iss.1, 2002-03, pp. : 1-19

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Abstract