strategies for sustainable systems in Tanzania Tibaijuka, Anna K. text Aldershot Ashgate c1998 monographic xxxi, 352 p. ill. ; 24 cm. Part A: Introduction Part B: Seminar proceedings Anna Kajumulo Tibaijuka (Editor) Economy Social services 361.9678 SOC 9781840148961 1840148969 DCC Library 20260715123318.0 eng.