visualization of crystallographic structures

[Default Trumpet User]

Hello,
I am looking for a crystallography program package to visualize crystall.
structures. I like to use it as a tool in my lecture on solid state physics.
Some PCs (486, S-VGA) and Unix Workstations (SUNs) are available. 
Dieter
Dieter Schumacher, University of Duesseldorf, 40225 Duesseldorf, Germany
FAX: ##49 211 311 3117   TEL: ##49 211 311 4267
schumac at ze8.rz.uni-duesseldorf.de