Development and spread of high-yielding varieties of wheat and rice in the less developed nations
著者
書誌事項
Development and spread of high-yielding varieties of wheat and rice in the less developed nations
（Foreign agricultural economic report, no. 95）
U.S. Dept. of Agriculture, Office of International Cooperation and Development, 1978
6th ed
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注記
First published in 1969 under title: Imports and plantings of high-yielding varieties of wheat and rice in the less developed nations
Includes bibliographical references
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