United States. Agency for International Development. Office of Agriculture. Summary of ongoing research and technical assistance projects in agriculture. Dept. of State, Agency for International Development.
芝加哥风格引文United States. Agency for International Development. Office of Agriculture. Summary of Ongoing Research and Technical Assistance Projects in Agriculture. Washington: Dept. of State, Agency for International Development.
MLA引文United States. Agency for International Development. Office of Agriculture. Summary of Ongoing Research and Technical Assistance Projects in Agriculture. Dept. of State, Agency for International Development.
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