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Data sets Publications Expeditions Thesaurus
Rio Negro  search
UFNegro River
RTBrazil
 South America
 Colombia
 Venezuela
 Amazonas Venezuela
SNRiver in NW South America. Flows into the Amazon River. Also occurs in numerous other locations. Search in combination with country. Indexed with countries or continent as applicable.
Rio Negro Argentina  search
BTSouth America
 .Argentina
 ..Rio Negro Argentina
RTPatagonia
 Neuquen Basin
SNProvince in central Argentina.
Rio Negro Meteorite  search
BTmeteorites
 .stony meteorites
 ..chondrites
 ...L chondrites
 ....Rio Negro Meteorite
RTBrazil
SNImpact in Brazil. Added to Thesaurus in 1981.
Rio Negro Uruguay  search
BTSouth America
 .Uruguay
 ..Rio Negro Uruguay
SNDepartment in W Uruguay.