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Date: 2013-03-18 10:41:23Planetary science Ice core Cryosphere WAIS Divide National Ice Core Laboratory Ice sheet Polar ice packs Polar ice cap Sea ice Physical geography Earth Glaciology | Wed, Jan 17, 2007 1:37 PM Subject: Update 060816 Date: Wednesday, August 16, 2006 10:10 AM From: Mark Twickler Add to Reading List |