共查询到20条相似文献，搜索用时 0 毫秒
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Leshner AI 《Science (New York, N.Y.)》2004,306(5694):197
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Avery D 《Science (New York, N.Y.)》1985,230(4724):408-412
World agricultural production is at an all-time high and is climbing fast, especially in the developing countries. Even Africa has ample land and technology to feed its population, given more effective national policies. Higher agricultural output has been stimulated primarily by new technology, but also by investments and improved government policies. Constraints such as cropland shortage, soil erosion, and higher oil prices have been readily surmounted. High-technology agriculture has even overcome some major "systems breaks." Thus U.S. farmers will continue to face commercial surpluses of farm products in world markets in the years ahead. 相似文献
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Goldberg DE 《Science (New York, N.Y.)》2002,296(5567):482-483
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Agnew B 《Science (New York, N.Y.)》2000,287(5460):1952-1953
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Peter T Marcolli C Spichtinger P Corti T Baker MB Koop T 《Science (New York, N.Y.)》2006,314(5804):1399-1402
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Frank L 《Science (New York, N.Y.)》2000,287(5462):2398-2399
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Dyer FC 《Science (New York, N.Y.)》1966,151(3709):405
In my letter in the issue of 24 December ("Looking ahead," p. 1667), I erroneously made Klement Gottwald, instead of Walter Ulbricht, the protagonist of "a story popular in Germany (East and West) during the 1950's." I am indebted to Károly Balogh for reminding me that Gottwald was Ulbricht's Czech counterpart. 相似文献
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Nair BK 《Science (New York, N.Y.)》1974,185(4152):646-649
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Folbre N 《Science (New York, N.Y.)》2008,319(5871):1769-1770
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Bird J 《Science (New York, N.Y.)》1991,252(5010):1248
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Wiltshire MC 《Science (New York, N.Y.)》2001,292(5514):60-61