Authors
Helena Hercman
Institute of Geological Sciences, Polish Academy of Sciences, Warszawa, Poland
Marek Szczerba
Institute of Geological Sciences, Polish Academy of Sciences, Warszawa, Poland
Paweł Zawidzki
Institute of Geological Sciences, Polish Academy of Sciences, Warszawa, Poland
Agata Trojan
Institute of Geological Sciences, Polish Academy of Sciences, Warszawa, Poland