Charles Lyell: Citations en anglais
Source: The Geological Evidences of the Antiquity of Man (1863), Ch.21, p. 423
Ref. Ferrante Imperato, Dell'Historia Naturale http://books.google.com/books?id=heGCGe1Rn3YC& (1599)
Chpt.3, p. 30
Principles of Geology (1832), Vol. 1
Source: The Geological Evidences of the Antiquity of Man (1863), Ch.21, p. 412
Source: The Geological Evidences of the Antiquity of Man (1863), Ch.21, p. 410-411
Source: The Geological Evidences of the Antiquity of Man (1863), Ch.21, p. 414-415
Source: The Geological Evidences of the Antiquity of Man (1863), Ch.20, p. 389
Source: The Geological Evidences of the Antiquity of Man (1863), Ch.21, p. 413