Water of the world [video recording]
"Most people know that water is unevenly distributed over the Earth's surface in oceans, rivers, and lakes, but few realize how very uneven the distribution actually is. The world's oceans -- 139 million square miles -- contain 317 million cubic miles of saltwater. The atmosphere is a...
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| 语言: | eng |
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Lakewood, Colorado : Instructional Video USA,
2005
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