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How the Earth was formed - The Power of the Planet - BBC Two
Eric Wagemans
http://geologia-hoy.blogspot.com Habitualmente vemos a los volcanes como entes destructuctivos, pero el Dr. Iain Stewart muestra que no hay fuerza en el planeta que haya tenido un papel más importante en la creación del mundo en el que vivimos. Visita http://geologia-hoy.blogspot.com