Guffaw
发表于 2025-3-21 19:59:56
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胆小鬼
发表于 2025-3-21 21:24:46
Energy and Future Economic Growthave their bearing on future economic growth. We still have an economic recession, to which the oil embargo of 1973 and the sudden fourfold price increase of crude oil have been contributing factors. Medium-term economic and energy growth projections have continually been revised downward since 1974.
节省
发表于 2025-3-22 01:09:08
Are we at a Turning Point in the World Demographic Situation?e of hope and disillusionment, not to say resignation, without profound misgivings about the final result? There is hope in so far as birth rates recently seem to have begun to decline, especially in the Third World. But there is also disillusionment, because, contrary to all the predictions of expe
基因组
发表于 2025-3-22 07:53:59
Resources for Increasing World Food Production especially agricultural production, since, as we shall see, it is no use counting on food of non-agricultural origin. The problem of hunger is one of extreme urgency in the world today, yet it would be wrong to try and solve it without reference to the long term. Mankind’s distant future must not b
未开化
发表于 2025-3-22 08:49:13
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无瑕疵
发表于 2025-3-22 12:59:31
The Role of Technological Change in United States Economic Growthth. After many decades of relative neglect, there began in the mid-1950s a series of investigations of various aspects of this relationship, the purpose being both to extend the range and power of economic analysis and to help guide public policy. In the present chapter, my purpose is to summarise b
无瑕疵
发表于 2025-3-22 21:00:07
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飞来飞去真休
发表于 2025-3-22 22:27:47
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后来
发表于 2025-3-23 02:49:52
The Impact of Agricultural Price Policies on Demand and Supply, Incomes, and Imports; an Experimentaer, production per head has risen very slowly and has lagged behind consumption, while imports have increased. A number of recent studies have suggested that these trends will continue and that net imports of foodgrains by developing countries will approximately double between 1973–4 and 1985. This
humectant
发表于 2025-3-23 06:48:48
Are we at a Turning Point in the World Demographic Situation?rts, mortality rates look like rising, so much so that by the joint operation of these two factors the rate of population increase may be about to fall quickly. Malthusians may find their long-cherished hope fulfilled.