Information:
The 222 - Key Title tag contains a unique title
assigned to a serial in conjunction with the ISSN
(International Standard Serial Number). Many serials
use the same title or titles that are quite similar.
The key title is always unique and can help library
users distinguish between serials with similar or
identical titles.
Key titles are assigned by national centers and
registered with the ISSN Network in Paris (formerly
known as the International Serial Data System or
ISDS). The national center for the United States is
the Library of Congress. In Canada, the national
center is the National Library of Canada.
The first indicator is undefined and is always
blank. The second indicator is zero (0) unless the
key title begins with an article. When there is an
initial article the second indicator tells the
computer how many spaces to skip when indexing this
key title.
The 222 tag contains two subfields. Subfield a
contains the key title. The key title is formed from
the title transcribed from the serial. Subfield b is
used for qualifying information when it is necessary
to distinguish between two or more serials that use
the same title. The information in subfield b is
enclosed in parentheses.
Indicators
First Undefined
blank Undefined
Second Nonfiling characters
0 No nonfiling characters
0-9 Number of nonfiling characters
Subfields
a Key title (NR)
b Qualifying information (NR)
Punctuation
This tag does not end with a mark of punctuation
(., !, ?, -) unless the last word is an abbreviation
or closing parenthesis.
Examples:
222 0 _a3-2-1 contact
245 00 _a3-2-1 contact.
222 4 _aThe best plays and the year book of
the drama in America
_b(1951)
245 14 _aThe best plays of-- and the year book
of the drama in America.
Several serials with the same title:
222 0 _aSigns of the times
_b(Cincinnati)
245 00 _aSigns of the times :
_bthe national journal of advertising
displays.
222 0 _aSigns of the times
_b(Mountain View)
245 00 _aSigns of the times.
222 0 _aSigns of the times
_b(Keeling)
245 00 _aSigns of the times.
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