Dynamic earth changes in its surface
Shows how the earth's surface is constantly being changed by the action of water, wind, ice and temperature changes which either erode or build up land masses.
| 企业作者: | |
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| 格式: | Visual Material |
| 语言: | English |
| 出版: |
Northbrook, Illinois
Coronet MTI Film & Video
[1990]
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| 版: | Second edition. |
| 丛编: | The earth series.
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| 主题: |