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1885

Title Page: Monographs of the United Sta …

Geology Book

(Title Page to) Department of Interior : …

1885

Title Page: Monographs of the United Sta …

Geology Book

(Title Page to) Geological history of La …

1809

Title Page: Observations on the geology …

Geology Book

(Title Page to) Observations on the Geol …

1818

Title Page: Observations on the geology …

Geology Book

(Title Page to) Transactions of the Amer …

1838

Title Page: Observations on the geology …

Geology Book

(Title Page to) Observations on the Geol …