Dimitrova, T. (2004). Palynological study of the Gurkovo Formation (Westphalian D/Cantabrian), Dobrudzha Basin, Bulgaria. Geologica Balcanica. 34(3-4): 29-43.
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Dimitrova, T.
2004
Palynological study of the Gurkovo Formation (Westphalian D/Cantabrian), Dobrudzha Basin, Bulgaria