LAC Policy Statements for thematic index number

LAC Core if the element is used to fulfill the LAC Core requirement for Work: numeric designation of musical work.

LAC practice: Apply the option. Caption the number using the abbreviation specified in Thematic Indexes Used in Library of Congress NACO Authority Files .

LAC practice: Apply the option if the thematic index does not have an abbreviation defined in Thematic Indexes Used in Library of Congress NACO Authority Files and there is not another form of abbreviation defined in the index itself or in common use.

LAC practice: Apply the option if the thematic index does not have an abbreviation defined in Thematic Indexes Used in Library of Congress NACO Authority Files .