1938- 2006f-345 2017e-736 20thcentury 87(venezuelaandcolombia) amazonriverregion anthropologicalethics anthropologists anthropology artistic authorship biography brazil captivities crimesagainst culturalassimilation davi descriptionandtravel diet dietary ethics ethnicgroups ethnology fieldwork firstcontactwitheuropeans genocide gn407+inprocess goldminers goldminesandmining governmentrelations healthandhygiene helena history indiancaptivities indians indiansofsouthamerica indigenouspeoples influencechagnon interactivemultimedia jacques kinship kopenawa lizot napoleona nutrition nutritionalphysiologicalphenomena photography professionalrelationships publicopinion publicopinionchagnon religion religionandmedicine roraima salt-freediet saltinthebody shamanism shamans socialchange socialconditions sociallifeandcustoms sodium-restricted sodiumchloride southamerican studyandteaching(higher) treatmentof valero venezuela venezuelayanomamöculturalprocesses wars wb55 yanomamomythology yanomamöculturalprocessesbrazil