Biological Control of Downy Mildew and Yield Enhancement of Cucumber Plants by <i>Trichoderma harzianum</i> and <i>Bacillus subtilis</i> (Ehrenberg) under Greenhouse Conditions oleh Héctor G. Núñez-Palenius, Blanca E. Orosco-Alcalá, Isidro Espitia-Vázquez, Víctor Olalde-Portugal, Mariana Hoflack-Culebro, Luis F. Ramírez-Santoyo, Graciela M. L. Ruiz-Aguilar, Nicacio Cruz-Huerta, Juan I. Valiente-Banuet