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56 Šn/2043-sep.
WHITTINGTON, H.B.
Definition of Tredamoc series and Ordovician series in Britain / H.B. Whittington - W.T. Dean - R.A. Fortey. -- 1983. -- S.71-74. -- separát. -- Citováno jako: WHITTINGTON, H.B. - DEAN, W.T. - FORTEY, R.A. Definition of Tremadoc series... [B.u.] 1983, S.71-74.
Tremadoc
Arenig
Lianvirn
Lladeilo
Caradoc- Ashgill
56
58865
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