SÁNCHEZ-R., M. Y.; VARGAS-B., H. L.; SÁNCHEZ-G., G. Evoluatlon of Two Varieties of Bacillus Thuringiensis on the Control of Diaphania Spp. (Lepidoptera: Pyralidae) in Melon. Rev. Colomb. Entomol. 1999, 25, 17-21.