Biodiversity Heritage Library
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10 Pages in
Charles Darwin's Library
associated with "strata/epochs - silurian"
Contributions to the natural history of the United States of North America.
By: Agassiz, Louis,
Publication info: [s.n.] :[s.n.],n.d..
A manual of elementary geology.
By: Lyell, Charles.
Publication info: [s.n.] :[s.n.],1855.