Nitrogen Flow and Environmental Effects of Crop-Livestock System in Typical Area of North China Plain-A Case Study in Hebei Province
TONG BingXin, ZHANG HuaFang, GAO XiaoXian, HOU Yong, MA WenQi
Nitrogen Flow and Environmental Effects of Crop-Livestock System in Typical Area of North China Plain-A Case Study in Hebei Province
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