[1]
T. R. Lima, D. D. Nunes, J. M. da Silva, D. P. Linhares, A. M. Mendes, and D. F. A. Silva, “Soils natural fertility of Madeira-RO fluvial plain: a physic-chemistry analysis (CEC, m% E V%) of the stretch from Porto Velho-RO to Humaitá-AM”, S&N, vol. 1, no. 1, May 2005.