Information:
The See From Tracing - Topical Term (450 tag) of the
MARC authority record contains a term not used as a
subject access point. This term is linked to the
proper term that can be used as a subject heading.
Many of the subject headings established in the
Library of Congress Subject Headings (LCSH),
the Sears List of Subject Headings, and the
Library of Congress subject headings for children's
literature (LCAC) include these unauthorized terms.
The letters UF (Use For) appear at the beginning of
the list of unauthorized terms. Using the 450 tag
creates a see reference taking the person who searches
by the unauthorized term to the correct subject
heading.
The Sears List of Subject Headings entry for
Automobiles begins:
Automobiles 388.3; 629.222
UF Cars (Automobiles)
Motor cars
This means a 450 tag will need to be created for Cars
(Automobiles) and a second 450 tag for Motor cars.
(See examples)
The local library could also add other 450 tags to
create see references from other words that library
users tend to use as search terms.
Indicators
First Undefined
blank Undefined
Second Undefined
blank Undefined
Subfields
Main term portion
a Topical term (NR)
Subject subdivision portion
v Form subdivision (R)
x General subdivision (R)
y Chronological subdivision (R)
z Geographical subdivision (R)
Examples:
LCSH
150 _aEducation, Primary
450 _aChildren
_xEducation (Primary)
450 _aPrimary education
150 _aVietnamese Conflict, 1961-1975
450 _aVietnam Conflict, 1961-1975
450 _aVietnam War, 1961-1975
450 _aVietnamese War, 1961-1975
150 _aUniversities and colleges
_xEntrance examinations
450 _aCollege boards (Examinations)
450 _aCollege entrance examinations
450 _aEntrance examinations for college
150 _aArt, Modern
_y19th century
450 _aArt
_y19th century
150 _aMafia
_zUnited States
450 _aCosa Nostra
150 _aHolmes, Sherlock (Fictitious character)
450 _aSherlock Holmes (Fictitious character)
Sears
150 _aAutomobiles
450 _aCars (Automobiles)
450 _aMotor cars
150 _aElementary education
450 _aChildren
_xEducation
450 _aEducation, Elementary
450 _aEducation, Primary
450 _aEducation of children
450 _aGrammar schools
450 _aPrimary education
150 _aVietnam War, 1961-1975
450 _aVietnamese Conflict, 1961-1975
450 _aVietnamese War, 1961-1975
150 _aColleges and universities
_xEntrance examinations
450 _aCollege entrance examinations
450 _aEntrance examinations for colleges
AC
150 _aDogs
450 _aPuppies
150 _aStrangers
450 _aChildren and strangers
Local
150 _aLocal authors
450 _aIowa authors
450 _aSioux City authors |
