DEVONIAN (STRATIGRAPHY)
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BTPALAEOZOIC (STRATIGRAPHY)
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UDC551.734
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Descriptor GERDEVON (STRATIGRAPHIE)
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Descriptor ENGDEVONIAN (STRATIGRAPHY)
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Descriptor FREDEVONIEN (STRATIGRAPHIE)
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NTMIDDLE DEVONIAN (STRATIGRAPHY)
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NTUPPER DEVONIAN (STRATIGRAPHY)
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NTLOWER DEVONIAN (STRATIGRAPHY)
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RTMIDDLE DEVONIAN (STRATIGRAPHY)
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RTUPPER DEVONIAN (STRATIGRAPHY)
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RTLOWER DEVONIAN (STRATIGRAPHY)