Spherule deposits in Cretaceous-Tertiary boundary sediments in Belize and Guatemala
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Autor:
Keller, G., Stinnesbeck, W., Adatte, T., Holland, B., Stüben, D., Harting, M., de Leon, C. & de la Cruz, J.
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Quelle:
Journal of the Geological Society, London, Vol. 160, 783 – 795 (2003)