martes, 3 de enero de 2012

WEATHERING AND SOIL.

In every outthrust headland, in every curving beach, in every grain of sand there is the story of the earth.

Rachel Carson

http://dl.dropbox.com/u/49809809/unit%205.%20Modelado%20del%20relieve%28%20Ingl%C3%A9s%29.docx