Dear ColleagueWe would like to call your attention to a Summer School on Periodic Structures and Crystal Chemistry sponsored by the International Center of Materials Research at the University of California, Santa Barbara, July 27-August 9, 2008. Interested qualified students are encouraged to apply early as space is limited. Application can bemade at the web site:http://www.icmr.ucsb.edu/programs/CrystalChemistry.htmlApologies if you get more than one notice, we are amateurs,Sincerely,Mike O”KeeffeDavide Proserpio