PRINCIPLES OF THE SEARS LIST OF SUBJECT HEADINGS
C. ii. See also References
in the public catalog See also references direct the user from one established heading to another established heading. Under most headings in the Sears List, following the BT [Broader term] label, is a term that is broader in scope than the heading itself As a rule, a term has only one broader term, unless it is an example or aspect of two or more things. The broader term serves two functions in the List. The first is to aid the cataloger in finding the best term to assign to a work. If the first term the cataloger thinks of to describe the contents of the work does not cover ll aspects of work, the broader term may be the more appropriate heading for that work. The second function is to indicate where See also references should be made in the public catalog. A See also reference is made from a broader term to a narrower term, but not from a narrower term to a broader term. Take, for example, the broader term Clothing and dress on the heading Gloves, When the heading Gloves is assigned for the first time to a work in the collection, a reference is made at Clothing and dress "See also Gloves." If Clothing and dress has never been assigned to a work in the collection, it is entered in the catalog for the sake of the reference, and the reference "See also Gloves" is made. The point is that the user who is interested in works on clothing and dress in general may also be interested in works limited to gloves. The book on gloves need not be entered under both Clothing and dress and Gloves, but only under the ap- propriately specific heading, because the See also reference will direct the user from the broader to the narrower term. If the book on gloves were entered under both Clothing and dress Gloves, the catalog would first list the book under the heading Clothing and dress and then direct the user to look as well under Gloves only to find the same book.
หลักการของ SEARS รายการหัวเรื่อง ค. ii ดูอ้างอิง in the public catalog See also references direct the user from one established heading to another established heading. Under most headings in the Sears List, following the BT [Broader term] label, is a term that is broader in scope than the heading itself As a rule, a term has only one broader term, unless it is an example or aspect of two or more things. The broader term serves two functions in the List. The first is to aid the cataloger in finding the best term to assign to a work. If the first term the cataloger thinks of to describe the contents of the work does not cover ll aspects of work, the broader term may be the more appropriate heading for that work. The second function is to indicate where See also references should be made in the public catalog. A See also reference is made from a broader term to a narrower term, but not from a narrower term to a broader term. Take, for example, the broader term Clothing and dress on the heading Gloves, When the heading Gloves is assigned for the first time to a work in the collection, a reference is made at Clothing and dress "See also Gloves." If Clothing and dress has never been assigned to a work in the collection, it is entered in the catalog for the sake of the reference, and the reference "See also Gloves" is made. The point is that the user who is interested in works on clothing and dress in general may also be interested in works limited to gloves. The book on gloves need not be entered under both Clothing and dress and Gloves, but only under the ap- propriately specific heading, because the See also reference will direct the user from the broader to the narrower term. If the book on gloves were entered under both Clothing and dress Gloves, the catalog would first list the book under the heading Clothing and dress and then direct the user to look as well under Gloves only to find the same book.
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