../ cepheids.mpeg 05-Jan-2006 16:37 547701 cows.avi 26-Oct-2007 19:34 4488192 selkirk_teachers_cpd.pdf 13-Nov-2010 09:31 28947886 selkirk_teachers_cpd.ppt 12-Nov-2010 16:03 53832192 solar_system.avi 11-Nov-2001 20:07 3093504