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2. Efecto de dos cargas animal sobre la productividad de vacas Brahman en un sitio con clima Af(m), y suelos ultisoles;Alarcón,1999
3. Livestock production systems in central Veracruz State, Mexico;Aluja,1984
4. Forage resource profiles. Mexico;Améndola,2005
5. Herbivore mediation of grass-woody plant interactions;Archer;Tropical Grasslands,1995