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＜図書＞
A history of agricultural experimentation and research in the United States, 1607-1925, including a history of the United States Department of Agriculture
(Orig. : U. S. Dept. of Agriculture. Miscellaneous publication no. 251))

出版者	New York : Johnson Reprint
出版年	1970
大きさ	vi, 321 p. illus. 23 cm.
著者標目	True, Alfred Charles, 1853-1929
件　名	United States Department of Agriculture Agriculture -- Experimentation  全ての件名で検索 Agriculture -- United States -- History  全ての件名で検索
一般注記	Reprint of the 1937 edition. ＼ Bibliography: p.278-295.

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