Contributions to the history of American geology /
Merrill, George P.(George Perkins),1854-1929.
[Washington, Govt. Print. Off.,
1906]
Detached from the Annual report of the board of regents of the Smithsonian Institution ... for the year ending June 30, 1904.
"Brief biographical sketches of the principal workers in American geology": p.687-715.
Geology
Geology