| Oxford Encyclopedia of the arts, separately CS Smith and JG Hawthorne, translation of the Mappe Clavicula — introduction p4, Transactions of the American Phil | Smedley et al 1998, 156• Smedley et al 1998, 146• Cox et al 1986, 57• |
|---|---|
| and 1st Lady Lou Henry Hoover, The Mining Magazine, London, 1912, reprinted 1950 by the Dover Press, NY• 1st ed De Re Metallica, as translated by President Herbert C |
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