UNESCO2015-07-152015-07-15https://bibliotecadigital.ciren.cl/handle/20.500.13082/15420PDFesAtribución 3.0 ChileEcologíaEcosistema acuáticoImpacto ambientalBiósfera "Ecología"Programme on man and the biosphere (mab). Ecological effects of human activities on the value and resources of lakes, marshes, rivers, deltas, estuaries and coastal zones.LibroSector agrícola104