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"Volcanic air-fall origin" » "Volcanic air-family origin" (Expandir a busca)
volcanic air » volcanic ash (Expandir a busca)
"Volcanic air-fall origin" » "Volcanic air-family origin" (Expandir a busca)
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“...Volcanic air-fall origin...”
Origem vulcânica para o tonstein da jazida do Faxinal (RS) : estudos mineralógicos, petrográficos e de palinofácies
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