Dependence of the velocity changes of secular variations on the position of observatory and time von Sumaruk, T. P., Sumaruk, P. V.

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Peculiarities of the geomagnetic field secular variations at the 20th solar activity cycle von Sumaruk, T. P., Sumaruk, P. V.

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Secular variations on the North American tectonic plate von Sumaruk, T.P., Sumaruk, P.V.

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Dynamics of temporal changes of geomagnetic field secular variations von Sumaruk, Yu.P., Sumaruk, T.P.

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