Home Publications & Data Report Development of improved grazing systems in the savannas of tropical America author(s) Vera, Raúl R. published in1984 original file download full citation VERA, R.R.; SERE, C.; TERGAS, L.E. 1984. Development of improved grazing systems in the savannas of tropical America. Centro Internacional de Agricultura Tropical (CIAT), Cali, CO. 20 p.