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2. ‘Jewels in a copper crown’;Bull;Profit: A Zambia Business Magazine,1993
3. ‘Metals and minerals annual review: other gemstones’;Cavey;Mining Journal,1991
4. ‘The legal battle for small-scale mining’;Cramer;Appropriate Technology,1990
5. Davidson, J (1992) ‘Zimbabwe: legal notes’ Small Mining International Bulletin 4, February.