Alex Berry’s Z39.50 to web gateway: http://www.arthurspilling.com/ISBN/zoomtst2.cgi
Lisa pointed me to everything I’d ever want to know about MARC records
www.oclc.org/bibformats/en
Some field codes:
- 100 author
- 245 title
- 650 subj
- 260 publisher
- 020 ISBN