Portovelo: a volcanic-hosted epithermal vein-system in Ecuador, South America
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Cómo citar
F. Van Thournout, & J. Salemink, & G. Valenzuela, & M. Merlyn, & A. Boven, & P. Muchez (1996). Portovelo: a volcanic-hosted epithermal vein-system in Ecuador, South America. https://doi.org/10.1007/bf02280791