Marques, C.R.G. et al. 2010. Diagnosis of the knowledge of basic informations for the usage of pesticides by vegetable growers in Londrina Region<b/>. Semina: Ciências Agrárias. 31, 3 (Sep. 2010), 547–556. DOI:https://doi.org/10.5433/1679-0359.2010v31n3p547.