00506nam a22000977a 4500008004100000100003700041245014200078260005500220300003000275650010300305200415b           ||||| |||| 00| 0 eng d  aThe  united republic of tanzania  a50 years independence tanzania mainland development of statistics before and after independencecThe United Republic of TanzaniahEnglish  aDar Es SalaambNational Bureau of Statisticsc2011  a16p.b.Illustrationc28cm  250 years of independence tanzania mainland development of statistics before and after independence