Kliemann, H. J., & Malavolta, E. (2007). SULPHUR AVAILABILITY IN BRAZILIAN SOILS: AVAILABLE SULPHATE-SULPHUR EVALUATION BY CHEMICAL EXTRACTANTS. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], 23(1), 165-186. https://doi.org/10.5216/pat.v23i1.2639