Note 31 — Chapter XXIX · THE CARBONIFEROUS VOLCANOES OF ENGLAND
Reading edition
Geol. Surv. Mem. on North Derbyshire, by Messrs. Green and Strahan (1887), p. 104.
Reading edition
Geol. Surv. Mem. on North Derbyshire, by Messrs. Green and Strahan (1887), p. 104.