Services provided by the National Central Library in Dar es Salaam are: a fully organized public reference and lending service for both adults and children, a central book processing and supply unit, and a central advisory service. The Tanganyika Library Service also provides: branch libraries, rural mobile library services, loan of collections to a wide variety of institutions, a nation-wide postal library service, and a school (mobile) library service is in the offing. The role of libraries in Tanzania and the library services provided are discussed. (NH)