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Estrada C., Osval Y Huertas B., Luz Elena (2009) Effect of Bacillus thuringiensis Var. kurstaki, in the control of budworm plague Heliothis tergeminus (Felder & Rogenhofer) and Manduca sexta (Johanssen) in tobacco Nicotina tabacum in the municipality of Candelaria, department of Valle del Cauca. Project Report. Universidad de Nariño, Pasto.