Kejela, Kefeni Heavy Metal Leaching in Different Environments : experimental study of metals distribution attenuation and mobility in two Oklahoma soils amended with sewadge sludges / Kefeni Kejela. -- Saarbrücken : Lambert Academic Publishing, 2010. -- 117 s. : obr., tab., 23 cmpríl. -- ISBN 978-3-8383-6749-1 (brož.) : 64,90 €

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