| 66. |
The northern portion of the western coastal plain is called |
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| 67. |
The ozone layer at high altitude contains |
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| 68. |
The number of a topographic map is 47A/16/NW. Its scale must be |
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| 69. |
The radiation belts are zones in space around the |
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| 70. |
The right ascension is the equivalent of longitude on the celestial sphere, and it is given in the units of |
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