Continents in motion : the new earth debate /
Sullivan, Walter.
Continents in motion : the new earth debate / by Walter Sullivan. - New York : McGraw-Hill, [c1974]. - xiv, 399 p. : ill., maps.
033216830
Continental drift.
Continents in motion : the new earth debate / by Walter Sullivan. - New York : McGraw-Hill, [c1974]. - xiv, 399 p. : ill., maps.
033216830
Continental drift.