Chavarria, H. (2008). Detection of pesticide trails in groundwater in some agricultural settlements of the Quibor valley. Lara state. Universidad Centroccidental Lisandro Alvarado - Decanato de Ingeniería Civil.
शिकागो स्टाइल उद्धरणChavarria, Humberto. Detection of Pesticide Trails in Groundwater in Some Agricultural Settlements of the Quibor Valley. Lara State. Universidad Centroccidental Lisandro Alvarado - Decanato de Ingeniería Civil, 2008.
एमएलए उद्धरणChavarria, Humberto. Detection of Pesticide Trails in Groundwater in Some Agricultural Settlements of the Quibor Valley. Lara State. Universidad Centroccidental Lisandro Alvarado - Decanato de Ingeniería Civil, 2008.
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