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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. District Boundaries of India, 1991

1991. ML InfoMap (Firm). This layer is a polygon theme representing district boundaries of India for 1991. Includes district socio-demographic Census attribute data such as... ML InfoMap (Firm).

3. Municipal Boundaries: Brasil, 1991

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

4. North American Countries, 2014

1991. Environmental Systems Research Institute (Redlands, Calif.). This polygon shapefile contains the boundaries for Canada, Mexico, Greenland, the Dominican Republic, Cuba, Haiti, the Bahamas and Jamaica. This la... Environmental Systems Research Institute (Redlands, Calif.).

5. State Boundaries: Brasil, 1991

1991. Instituto Brasileiro de Geografia e Estatística. This polygon shapefile contains the state boundaries of Brazil in 1991. These data were created using a custom World Polyconic projection. This lay... Instituto Brasileiro de Geografia e Estatística.

6. State Boundaries of India, 1991

1991. ML InfoMap (Firm). This layer is a polygon theme representing state boundaries of India for 1991 and includes socio-demographic Census attribute data such as total po... ML InfoMap (Firm).

7. Ward and Constituency Boundaries: Zambia, 1991-2006

1991. Provincial Centre for Geographic Information Services (Zambia). This polygon dataset depicts the Ward and Constituancy boundaries in Zambia from 1991 to 2006. These data were digitized from source data acquired ... Provincial Centre for Geographic Information Services (Zambia).