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CLC: G - 文化、科学、教育、体育
Filter Related Topics: 农业技术 AND 技术进步
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科技组织制度与农业技术进步研究

Cover is for reference only
Main Authors: 于永德 (于永德著)
Published: 中国农业出版社
Publication Dates: 2005
Call Number: G322.2/1432
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