Episodes 2020; 43(4): 1053-1056
Published online December 1, 2020
https://doi.org/10.18814/epiiugs/2020/020079
Copyright © International Union of Geological Sciences.
by Victor Cárdenes
Universidad de Oviedo Oviedo, SPAIN
Correspondence to:*E-mail: cardenes@geol.uniovi.es
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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