代表キーワード :: 経済発達
資料:1件
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Population growth and economic development
- Much has been said about the need to control the population of developing countries. In 2000, the world had 6.1 billion human inhabitants. This number could rise to more than 9 billion in the next 50 years. For the last 50 years, world population multiplied mo...
550 販売中 2006/05/16- 閲覧(1,564)
