 |
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 |
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Fig. 1.
Secular variation of solar radiation arriving to the Earth
(in the absence of atmosphere) within the interval from 3000 BC till
2999 AD, J/m2. |
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|
|
|
|
|
|
Fig. 1.
Secular variation of solar radiation arriving to the Earth
(in the absence of atmosphere) within the interval from 3000 BC till
2999 AD, J/m2. |
|
| |
|