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    Traditional opal mining practice in Ethiopia, challenges and its economic impact on rural households: the case of wollo opal mining [version 2; peer review: 1 approved, 2 approved with reservations]

    Traditional opal mining practice in Ethiopia, challenges and its economic impact on rural households: the case of wollo opal mining [version 2; peer review: 1 approved, 2 approved... by Addise Zemelak Sisay, Tadesse Wudu Abate

    Published 2025-06-01
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  2. 2
    Traditional opal mining practice in Ethiopia, challenges and its economic impact on rural households: the case of wollo opal mining [version 3; peer review: 1 approved, 2 approved with reservations]

    Traditional opal mining practice in Ethiopia, challenges and its economic impact on rural households: the case of wollo opal mining [version 3; peer review: 1 approved, 2 approved... by Addise Zemelak Sisay, Tadesse Wudu Abate

    Published 2025-08-01
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