Development and spread of high-yielding varieties of wheat and rice in the less developed nations

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書誌事項

タイトル: "Development and spread of high-yielding varieties of wheat and rice in the less developed nations"

出版者

Foreign Development Division, Economic Research Service, U.S. Dept. of Agriculture

出版年月

"Revises and expands ... Imports and plantings of high-yielding varieties of wheat and rice in the less developed nations, issued as FEDR-14."

Includes bibliographical references

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