Não informado. (2020). Special Reports on the Mineral Resources of Great Britain. H. M. Stationery Office.
Chicago-viite (17. p.)Não informado. Special Reports on the Mineral Resources of Great Britain. London: H. M. Stationery Office, 2020.
MLA-viite (8. p.)Não informado. Special Reports on the Mineral Resources of Great Britain. H. M. Stationery Office, 2020.
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