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Geozon Science Media, 1983-01-01
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Geozon Science Media, 1981-01-01
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Geozon Science Media, 1985-01-01
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Bonn: Ludwig Röhrscheid Verlag, 1981 ; Online-Ausgabe, Heidelberg: Propylaeum, 2021
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Geozon Science Media, 1991-01-01
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Geozon Science Media, 1988-01-01
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Geologica Belgica, 2000
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PERSEE Program, 1987
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PERSEE Program, 1986