Svobodová A., Košťák M. (2016) Calcareous nannofossils
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Svobodová A., Košťák M. (2016) Calcareous nannofossils and stratigraphy of the youngest Cretaceous sediments in the Jičín area // Geoscience Research Reports, Vol.49, P. 13-18.
http://www.geology.cz/img/zpravyvyzkum/ ... 160511.pdf
http://www.geology.cz/img/zpravyvyzkum/ ... 160511.pdf