Influence of the Biotechnological Process of Mezcal Fermentation on Yeast Diversity in Four <i>palenques</i> of Oaxaca, Mexico oleh Victor Adrian Espinoza-Martinez, Peggy Elizabeth Alvarez-Gutierrez, Felipe de Jesus Palma-Cruz, Raul Enriquez-Valencia, Marcos Pedro Ramirez-Lopez, Claudia Lopez-Sanchez, Hector Gilberto Vazquez-Lopez