共 50 条
- [33] ECONOMIC EVALUATION OF STREET-CONSTRUCTION PROJECTS IN DEVELOPING COUNTRIES [J]. JAHRBUCH FUR SOZIALWISSENSCHAFT, 1973, 24 (03): : 279 - 299
- [36] The future food security and economic consequences of soil degradation in the developing world [J]. RESPONSE TO LAND DEGRADATION, 2001, : 155 - 170