2015-07-152015-07-15https://bibliotecadigital.ciren.cl/handle/20.500.13082/18158enEcosistema de SabanaBiósfera "Ecología"TundraImpacto ambientalEcosistema de praderaUso y manejo del sueloProgramme on man and the biosphere (mab). Expert panel on project 3: impact of human activities and land use practices on grazing lands: savanna, grassland (from temperate to arid areas), tundra.Programa105