BIRCH-THOMSEN, Torben; FOG, Bjarne. Changes within Small-Scale Agriculture. A Case-Study from the Southwestern Tanzania. Geografisk Tidsskrift, [S. l.], v. 96, 1996. Disponível em: https://tidsskrift.dk/geografisktidsskrift/article/view/42071. Acesso em: 5 dec. 2025.