00274nam a2200109 a 450000500170000000800410001704100080005810000180006624500430008426400290012730000080015620260717091723.0260717s1998    ii            000 0 eng d  aeng1 aGribbin, John10aWatching the Universe /cGribbin, John 1bUniversity Press,c1998.  a234