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Needham e Lu 1974, p. 283. (EN) Joseph Needham e Gwei-djen Lu, Science and Civilisation in China, 5: Chemistry and Chemical Technology. Part 2, Spagyrical Discovery and Inventions: Magisteries of Gold and Immortality, Cambridge University Press, 1974, DOI:10.1086/ahr/82.4.1041, ISBN0-521-08571-3.
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Needham e Lu 1974, p. 285. (EN) Joseph Needham e Gwei-djen Lu, Science and Civilisation in China, 5: Chemistry and Chemical Technology. Part 2, Spagyrical Discovery and Inventions: Magisteries of Gold and Immortality, Cambridge University Press, 1974, DOI:10.1086/ahr/82.4.1041, ISBN0-521-08571-3.
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Needham e Lu 1974, p. 117. (EN) Joseph Needham e Gwei-djen Lu, Science and Civilisation in China, 5: Chemistry and Chemical Technology. Part 2, Spagyrical Discovery and Inventions: Magisteries of Gold and Immortality, Cambridge University Press, 1974, DOI:10.1086/ahr/82.4.1041, ISBN0-521-08571-3.
Needham e Lu 1974, p. 296. (EN) Joseph Needham e Gwei-djen Lu, Science and Civilisation in China, 5: Chemistry and Chemical Technology. Part 2, Spagyrical Discovery and Inventions: Magisteries of Gold and Immortality, Cambridge University Press, 1974, DOI:10.1086/ahr/82.4.1041, ISBN0-521-08571-3.
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Needham e Lu 1974, p. 284. (EN) Joseph Needham e Gwei-djen Lu, Science and Civilisation in China, 5: Chemistry and Chemical Technology. Part 2, Spagyrical Discovery and Inventions: Magisteries of Gold and Immortality, Cambridge University Press, 1974, DOI:10.1086/ahr/82.4.1041, ISBN0-521-08571-3.
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Trad. Needham e Lu 1974, p. 295. (EN) Joseph Needham e Gwei-djen Lu, Science and Civilisation in China, 5: Chemistry and Chemical Technology. Part 2, Spagyrical Discovery and Inventions: Magisteries of Gold and Immortality, Cambridge University Press, 1974, DOI:10.1086/ahr/82.4.1041, ISBN0-521-08571-3.
(EN) Elizabeth Lyons, Chinese Jades (PDF), in Expedition Magazine Penn Museum, vol. 20, 1978, p. 6. URL consultato il 28 settembre 2023 (archiviato dall'url originale l'11 maggio 2023). Ospitato su Penn Museum.