2 Pages in Charles Darwin's Library associated with "strata/epochs - Muschelkalk"

Principles of geology
By: Lyell, Charles, Sir,
Publication info: London, John Murray, 1837
Volume: v.4
Pages: Page 292
Supplement to the fifth edition of A manual of elementary geology
By: Lyell, Charles, Sir,
Publication info: London, John Murray, 1857
Pages: Page 28