TC4S:\T\T. Landscheidt - Cycles in Geomagnetic Activity | ||
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 Landscheidt, T.(1989)_Predictible Cycles in Geomagnetic Activity [2 p.].pdf | ||
TC4S:\T\T. Landscheidt - Cycles in Geomagnetic Activity | ||
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| Landscheidt, T.(1989)_Predictible Cycles in Geomagnetic Activity [2 p.].pdf | ||