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#Mon Aug 09 11:49:32 CEST 2010
Slide__YGDP4KObEd-WfYQ0GneCwQ_footer=The geomagnetic field as a current of particles. Ren\u00E9 Descartes\: Principia philosophiae, Amsterdam 1644
Slide__YGDP4KObEd-WfYQ0GneCwQ_title=The Magnetic Field of the Earth
Slide__YGDP4KObEd-WfYQ0GneCwQ_subTitle=