Distribution of the varieties and classes of wheat in the United States ...
著者
書誌事項
Distribution of the varieties and classes of wheat in the United States ...
（Circular / United States Department of Agriculture, 1929-no.283）
U.S. Dept. of Agriculture, 19--
- 1929
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注記
Cover title
Vols. for <1959>-1969 were issued by the U.S. Dept. of Agriculture, Agricultural Research Service; 1974 by the Science and Education Administration, U.S. Dept. of Agriculture; <198 -> by the Statistical Reporting Service
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