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#Mon Aug 09 12:11:54 CEST 2010
Slide__a-CCQKOeEd-WfYQ0GneCwQ_footer=Ren\u00E9 Descartes\: Principia philosophiae, 1644
Slide__a-CCQKOeEd-WfYQ0GneCwQ_subTitle=Propagation of Rays Into Different Interplanetary Types of Material Particles
Slide__a-CCQKOeEd-WfYQ0GneCwQ_title=