Note 29 — Chapter XXIX · THE CARBONIFEROUS VOLCANOES OF ENGLAND
Reading edition
Quart. Journ. Geol. Soc. xxx. (1874), p. 529.
[30] British Petrography, p. 209.
Reading edition
Quart. Journ. Geol. Soc. xxx. (1874), p. 529.
[30] British Petrography, p. 209.