The first one hundred years of American geology /
Merrill, George P.
The first one hundred years of American geology / by George P. Merrill. - New York : Hafner, 1969. - xxi, 773 p. : ill. ; 24cm.
Includes index.
Geology--History.
Geology--United States.
Geologists--United States.
The first one hundred years of American geology / by George P. Merrill. - New York : Hafner, 1969. - xxi, 773 p. : ill. ; 24cm.
Includes index.
Geology--History.
Geology--United States.
Geologists--United States.