Effect of calcium silicate and superphosphate application on surface charge properties of volcanic soils from West Sumatra, Indonesia by Fiantis, D., Van Ranst, E., Shamshuddin, J., Fauziah, I., Zauyah, S.

Changes in the chemical and mineralogical properties of Mt. Talang volcanic ash in West Sumatra during the initail weathering phase. by Fiantis, D., Nelson, M., Jusop, Shamsuddin, Goh, T.B., Ranst, E. Van

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