Keyword "TERTIARY SANDS" in:

Ilmenites from the Tertiary deposits relict between Rakovník and Velká Černoc (called Hlavačov gravels)
Stárková,M., Táborský,Z., Sidorinová,T., Malec,J., volume 41, 2008 (GRR for 2007), pages 193–196
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