杨陵区
- 网络Yangling
杨陵区-
杨陵渠灌类型区定点农户经济状况调查及对比分析宁夏引黄灌区不同型式衬砌渠道水权转换价格计算探讨
Investigation of Financial Situation and Comparison Analysis of Fixed Peasant Households in Canal Irrigation Area of Yangling ; Water-right trading calculation for different types of lined canals in the Yellow River water diversion irrigation districts in Ningxia