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Extractability of nutrients using Mehlich 3 and ammonium bi..:

Chunping ZHANG ; Decao NIU ; Yuntao REN.
https://pse.agriculturejournals.cz/artkey/pse-201809-0007_extractability-of-nutrients-using-mehlich-3-and-ammonium-bicarbonate-dtpa-methods-for-selected-grassland-soils.php.  , 2018