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1. Disputed Boundaries: Brasil, 1991

1991. Instituto Brasileiro de Geografia e Estatística. This polygon shapefile represents disputed boundaries of Brazil in 1991. These data were created using a custom World Polyconic projection. This la... Instituto Brasileiro de Geografia e Estatística.

2. Disputed Boundaries: Brasil, 1980

1980. Instituto Brasileiro de Geografia e Estatística. This polygon shapefile represents the disputed boundaries of Brazil in 1980. These data were created using a custom World Polyconic projection. Thi... Instituto Brasileiro de Geografia e Estatística.

3. Disputed Boundaries: Brasil, 1970

1970. Instituto Brasileiro de Geografia e Estatística. This polygon shapefile represents the disputed boundaries of Brazil in 1970. These data were created using a custom World Polyconic projection. Thi... Instituto Brasileiro de Geografia e Estatística.

4. Disputed Boundaries: Brasil, 1950

1950. Instituto Brasileiro de Geografia e Estatística. This polygon shapefile represents the disputed boundaries of Brazil in 1950. These data were created using a custom World Polyconic projection. Thi... Instituto Brasileiro de Geografia e Estatística.

5. Disputed Boundaries: Brasil, 1940

1940. Instituto Brasileiro de Geografia e Estatística. This polygon shapefile represents the disputed boundaries of Brazil in 1940. These data were created using a custom World Polyconic projection. Thi... Instituto Brasileiro de Geografia e Estatística.