Filho, A. de C.V. et al. 2001. Effect of liming and fertilization on nutritional state and dry rubber production of rubber-tree. Pesquisa Agropecuaria Brasileira. 36, 8 (Aug. 2001), 1019–1026. DOI:https://doi.org/10.1590/S1678-3921.pab2001.v36.6225.