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  1. Report on the property of the Triunfo Silver Mining and Commercial Company of Lower California : with some account of the mines of the peninsula and observations on the mode of beneficiating silver ores

    • Collection: Baja California
    • Name: Triunfo Silver Mining and Commercial Company of Lower California; Triunfo Silver Mining and Commercial Company of Lower California.
    • Date: 1866
    • Topic: Silver ores; Silver mines and mining
    • Format: text