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veeresh1963
Dec 7, 2009, 02:18 AM
How earths magnatic field is produced?
veeresh1963
Dec 7, 2009, 02:19 AM
I do not know
Curlyben
Dec 7, 2009, 02:21 AM
HowStuffWorks "Earth's Magnetic Field" (http://adventure.howstuffworks.com/outdoor-activities/hiking/compass1.htm)