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Romero-Morales, M. Ángel; Cruz-León, A.; Goytia-Jiménez, M. A.; Sámano-Rentería, M. Ángel .; Baca del Moral, J. Sustainability of Two Production Systems of Brown Sugar Cones in Indigenous Communities of the Central Region in the Huasteca Potosina. geografia 2011, 73-86.