2 Pages in Charles Darwin's Library associated with "fauna - Acephala"

Contributions to the natural history of the United States of North America
By: Agassiz, Louis,
Publication info: [s.n.], [s.n.], n.d
Pages: Page 109
Lake Superior: its character, vegetation, and animals, compared with those of other similar regions
By: Agassiz, Louis,
Publication info: Boston, Gould, Kendall & Lincoln, 1850
Pages: Page 199