X00 Subfield $n - Number of part/section of a work:

Subfield $n contains a number designation for a part or section of a work used with a title in a name/title heading . Numbering is defined as an indication of sequencing in any form (e.g., Part 1, Supplement A, Book two). In music titles, the serial, opus, or thematic index number is contained in subfield $n.

Examples:

100 1#$aCrisp, Thomas,$d17th cent.$tBabel's-builders unmask't.$nPart 1

100 0#$aOvid,$d43 B.C.-17 or 18 A.D.$tArs amatoria.$nLiber 1.$lEnglish

400 1#$aTolkien, J. R. R.$q(John Roland Reuel),$d1892-1973.$tLord of the rings.$n2,$pTwo Towers

[Part/section is both numbered and named.]

400 1#$wnnaa$aHindemith, Paul,$d1895-1963.$tSonata,$mpiano, 4 hands$n(1938)

[Parenthetical date in music titles is a part/section of a work.]

400 1#$aHindemith, Paul,$d1895-1963.$tVierhaendige Sonata fuer zwei Klaviere, 1938

[Date is not a part/section number.]

Multiple alternative numberings for a part or section (usually separated by commas) are contained in a single subfield $n.

Example:

400 1#$aMendelssohn-Bartholdy, Felix,$d1809-1847.$tQuartets,$mstrings,$nno. 7, op. 81

A numbering that indicates a subpart to the first noted part or section (usually separated by a period) is contained in a separate subfield $n.

Example:

400 1#$aHindemith, Paul,$d1895-1963.$tPieces,$mstring orchestra,$nop. 44.$nNo. 4

To return:

Use the key.