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GeoTimeline_bl3_5 Bibliography
Alden, Andrew. "Birth of
The Earth." About.com Geology. The New York Times
Company. Web. Apr. 2012. .
"Climate Has Changed Throughout Earth's History." National
Fossil ...
GeoTimeline_bl3_5GeoTimeline_bl3_5 Bibliography Alden, Andrew. "Birth of The Earth." About.com Geology. The New York Times Company. Web. Apr. 2012.
