This is an ARCHIVED VERSION of the
2008 electronic edition of the MARC 21 Concise
Formats. Please see loc.gov/marc/concise/
for the most up-to-date version of the electronic MARC 21
Concise Formats.
Character Positions
18-22 - Undefined (006/01-05)
Undefined; each contains a blank (#) or a fill character
(|).
23 - Form of item (006/06)
One-character alphabetic code that specifies the form of
material for the item.
# - None of the following
a - Microfilm
b - Microfiche
c - Microopaque
d - Large print
f - Braille
r - Regular print reproduction
Eye-readable print, such as a photocopy.
s - Electronic
| - No attempt to code
24-34 - Undefined (006/07-17)
Undefined; each contains a blank (#) or a fill character
(|).