We use Dynix's HORIZON to add item level holdings to bibliographic records
for serials.  Follow the link below,
click on "library catalog," select "title browse" and enter "Scientific
American" to see how serial items display:

http://library.usgs.gov/

Diane M. Lewis, Serial Records Librarian
U.S. Geological Survey Library--MS950
Reston, Virginia  20192  USA
Tel. 703-648-4399
Fax 703-648-6376

"Washing one's hands of the conflict between the powerful and the powerless
means to side with the powerful, not to be neutral."--Paulo Freire,
educator (1921-1997)