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Standards of Value for Program Planning and Building... Proceedings of School for Washington Staff of Bureau of Agricultural Economics Held in Auditorium Freer Art Gallery, Washington, D. C., October 17-20, 1939
United States. Bureau of Agricultural Economics
出版1939
URLhttp://books.google.com.hk/books?id=poU_AAAAYAAJ&hl=&source=gbs_api
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