作者:
发布日期:2009
关键词:biomass;Biomass Research and Development Board;...
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作者:Wen-yuan Huang
发布日期:2009
关键词:Fertilizer;prices;...
发布机构:United States Department of Agriculture
作者:James M. MacDonald, Marc Ribaudo , Michael Livingston , Jayson Beckman, Wen-yuan Huang
发布日期:2009
关键词:Manure;fertilizer;...
发布机构:United States Department of Agriculture
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4 Feed Outlook: December 2009 [科技报告]
作者:Fred Gale, Francis Tuan , Xiaohui Wang , and Zhi Cao
发布日期:2009
关键词:China;corn;...
发布机构:United States Department of Agriculture
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