Guaviare River
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- Gold Mining Activity in Yapacana National Park Venezuela's Amazon Region: a National, International and Geopolitical Matter of Extreme Urgency for the Environment
- The Vaupes Arch and Casiquiare Canal Barriers and Passages
- World Bank Document
- HORSEMEN of the TROPICS: a COMPARATIVE Vlew of the LLANEROS in the HISTBRY of VENEZUELA ANB COLOMBIA*
- (Cuyarí) and Isana Rivers, Upper Río Negro Basin, Guainía Department, Colombia