I thought that the students could browse the book `Exploring the X-ray Universe' by P. A. Charles and F. D. Seward, Cambridge Univ. Press. I assume it will be available in the library. G. (Pepi) Fabbiano Harvard-Smithsonian gfabbiano@cfa.harvard.edu Center for Astrophysics Phone:(617)495-7203 60 Garden Street, MS 6