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1st Author:
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Paul, Henry 
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2nd Author:
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3rd Author:
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 | 
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Year:
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1939 | 
| 
Title:
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Die Etroeungt-Schichten des Bergischen Landes. | 
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Reference:
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Jahrbuch der Preußischen Geologischen Landesanstalt, 59 (for 1938): 647-726, fig.1-4, pl.39-42; Berlin. | 
| 
Keywords:
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Etroeungt-Schichten Berg. Land | 
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Link:
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