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1von: Lehmann, E.[1981], Reprint 2024, De Gruyter
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2von: Lehmann, E.[2022], Reprint 2022, De Gruyter
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3von: Lehmann, E.[1982], Reprint 2024, De Gruyter
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4von: Reinbacher, Erwin[1963], Reprint 2024, De Gruyter
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5
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6
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7
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8