Challenge to biologists in the 70's the escalation of food production
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| 格式: | 圖書 |
| 語言: | English |
| 出版: |
[Quezon City
National Research Council of the Philippines
1973.]
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| 叢編: | The Dr. Gregorio T. Velasquez lecture series, 1972-73
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| 主題: |