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Descripción archivística
Historical Papers Research Archive, University of the Witwatersrand James Charles Napoleon Humphreys, Mining papers Unidad documental simple Con objetos digitales
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Underground workings of Main Reef
Underground workings of Main Reef
Underground workings of South Reef
Underground workings of South Reef
Underground workings of Battery and Bird Reef
Underground workings of Battery and Bird Reef
Underground workings of Main Reef
Underground workings of Main Reef
Underground workings of South Reef
Underground workings of South Reef
Underground workings of Main Reef
Underground workings of Main Reef
Underground workings of South Reef
Underground workings of South Reef
Underground workings of Main Reef
Underground workings of Main Reef
Underground workings of Main Reef
Underground workings of Main Reef
Underground workings
Underground workings
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