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1. Earth Sciences:
Re: is volcanic ash considered to be soil?, Geoff Collins,
grad student, Planetary Geology, Brown University Fri Apr 3 13:03:58 1998
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2. Astronomy :
Re: Tidal influence on Earth's interior temperature, Geoff Collins,
grad student, Planetary Geology, Brown University Mon Sep 29 08:37:28 1997
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3. Astronomy :
Re: Why does Titan, the biggest of Saturn's moons have such a dense atmosphere ?, Geoff Collins,
grad student, Planetary Geology, Brown University Thu Aug 28 10:17:31 1997
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4. Astronomy :
Re: Is Mercury smaller than Pluto?, Geoff Collins,
grad student, Planetary Geology, Brown University Fri Sep 12 16:42:14 1997
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