By A Mystery Man Writer
Guyana Maps & Facts - World Atlas
map illustrating the five geographical Regions of the Brazil territory
Brazil, History, Map, Culture, Population, & Facts
Fernanda KEHDY Research profile
The Five Regions Of Brazil - WorldAtlas
Mateus FUCHSHUBER-MORAES, PhD, Brazilian National Cancer Institute, Rio de Janeiro, inca, Division of Pharmacology
Brazil – Travel guide at Wikivoyage
Mapped: The World Divided Into 4 Regions With Equal Populations
Brazil Country Profile - National Geographic Kids
Brazil - The World Factbook
Brasilia, Facts, History, & Architecture
Milene RAIOL, Federal University of Pará, Belém, UFPA, Institute of Biological Sciences (ICB)