Abreu, Lucimar Santiago de, et al. “TRAJECTORY AND CURRENT SITUATION OF ECOLOGICALLY-BASED AGRICULTURE IN BRAZIL AND IN THE STATE OF SAO PAULO”. Science & Technology Journals, vol. 26, no. 1/3, Jan. 2009, pp. 149-78, https://doi.org/10.35977/0104-1096.cct2009.v26.11040.