Hawkins, C. (1772). An address to the gentlemen of the county of Cornwall, on the present state of mining in that county: With some observations on the tin and copper trades. [s.n.].
Chicago-Zitierstil (17. Ausg.)Hawkins, Christopher. An Address to the Gentlemen of the County of Cornwall, on the Present State of Mining in That County: With Some Observations on the Tin and Copper Trades. London: [s.n.], 1772.
MLA-Zitierstil (9. Ausg.)Hawkins, Christopher. An Address to the Gentlemen of the County of Cornwall, on the Present State of Mining in That County: With Some Observations on the Tin and Copper Trades. [s.n.], 1772.
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