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Valuing Potential Benefits of Research into the Biological Control of Californian Thistle (Cirsium a
【机 构】
:
AgribusinessandEconomicsResearchUnit,AgReseareh
【出 处】
:
农业科学与技术
【发表日期】
:
2010年1期
【基金项目】
:
The authors thank Professor Grant Edwards, Lincoln University, and Dr Simon Fowler, Landcare Research, Lincoln, for providing information for this study and for helpful discussion during the developme
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