Royal Society of Chemistry (Great Britain), Humic Substances Seminar, Davies, G., & Ghabbour, E. A. (1999). Understanding humic substances: Advanced methods, properties and applications. Royal Society of Chemistry.
Παραπομπή σε μορφή Chicago (17η εκδ.)Royal Society of Chemistry (Great Britain), Humic Substances Seminar, Geoffrey Davies, και Elham A. Ghabbour. Understanding Humic Substances: Advanced Methods, Properties and Applications. Cambridge: Royal Society of Chemistry, 1999.
Παραπομπή σε μορφή MLA (9th εκδ.)Royal Society of Chemistry (Great Britain), et al. Understanding Humic Substances: Advanced Methods, Properties and Applications. Royal Society of Chemistry, 1999.
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