[9]
Investment in soil conservation in northern Ethiopia: the role of land tenure security and public programs[J] . Berhanu Gebremedhin,Scott M. Swinton.Agricultural Economics . 2003 (1)
[9]
Investment in soil conservation in northern Ethiopia: the role of land tenure security and public programs[J] . Berhanu Gebremedhin,Scott M. Swinton.Agricultural Economics . 2003 (1)