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	1.	No cover image available El oro : provincia potencialmente aurífera by Palacios, Washington Material type: Article; Format: print Language: Spa In: Minería ecuatoriana 1, 1988, p. 31-33 : ill. Availability: No items available.
	2.	No cover image available Platino en el Ecuador by Palacios, Washington Material type: Article; Format: print Language: Spa In: Minería ecuatoriana 2, 1990, p. 57-58 Availability: No items available.
	3.	No cover image available Mineralización en la subcordillera Puruvín-Gualleturo by Palacios, Washington Vaca, Eduardo Material type: Article; Format: print Language: Spa In: Minería ecuatoriana 3, 1994, p. 43-44 : ill., carte, tab. Availability: No items available.

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