1. Waters and wetlands of Brazilian Amazonia: An uncertain future;Sternberg,1995
2. Considering the Hidrovia;Lamers,1994
3. Hell's Highway;Heath;New Sci.,1995
4. The Orinoco: physical, biological and cultural diversity of a major tropical alluvial river;Vasquez,1992
5. The multispecies fisheries of the Orinoco River: development, present status, and management strategies;Novoa,1989