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Copyright Notice

These materials are works protected by the Copyright Laws of the United States and international treaties and are displayed solely for use by students of GP25 or Humbio 107 in connection with their course work at Stanford University. Astronomy 155 at San Jose State University, and Planetary Evolution and Habitability GE 159 at CalTech.

These materials may not be copied, displayed, distributed or used to make derivative works without the express written consent of the copyright owner. Any person wishing to copy or use these material for any purpose should make request in writing to Dr. Norman Sleep, Department of Geophysics, Stanford University.

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