Royal Society of Chemistry (Great Britain), Humic Substances Seminar, Davies, G., & Ghabbour, E. A. (2000). Humic substances: Versatile components of plants, soil and water. 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. Humic Substances: Versatile Components of Plants, Soil and Water. Cambridge, UK: Royal Society of Chemistry, 2000.
Παραπομπή σε μορφή MLA (9th εκδ.)Royal Society of Chemistry (Great Britain), et al. Humic Substances: Versatile Components of Plants, Soil and Water. Royal Society of Chemistry, 2000.
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