includes the following types of census subdivisions (CSDs) or communities affiliated with First Nations or Indian Bands: Indian Reserve (R), Indian Settlement (S-E), Indian Government District (IGD), Terres réservées (TR), Nisga'a Village (NVL), Nisga'a Land (NL) and Teslin Land (TL), as well as additional CSDs of various other types that are generally northern communities in Saskatchewan, the Northwest Territories and the Yukon Territory, which have large concentrations of Registered Indians