注解:chart 4: population density by state, malaysia, 2010图4
usa-population-density-per-square-mile
47% 5,巴基斯坦:3% 6,尼日利亚:2.8% 7,巴西:2.7% 8,孟加拉国:2.
cityreads│10 facts about world population you might not know
creation of a population pyramid
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