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51. A petrified eye

Author(s):

Lydston, James A., author

Publication:

Philadelphia : Lea Brothers & Co., [1893?]

Subject(s):

Eye
Fossils

52. A description of the Rockford shales of Iowa

Author(s):

Webster, Clement L., author

Publication:

[Iowa?] : [publisher not identified], [1887?]

Subject(s):

Fossils
Geologic Sediments
Iowa

53. The preservation of plants as fossils

Author(s):

James, Joseph F. (Joseph Francis), 1857-1897 author

Publication:

[Cincinnati, Ohio] : [publisher not identified], [1892?]

Subject(s):

Fossils
Plants