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Guidelines for Recording Holdings: Gaps and Nongap Breaks

  • Level 3 - Gaps are only recorded when a unit at the highest level of enumeration or chronology is missing.

     

  • Level 4 - (Mandatory) - Gaps are record when any unit is missing.

     

  • A gap is a break in the holdings of the published parts of a multipart unit or serial unit.

     

  • A nongap break is a break in the holdings of a multipart unit or serial unit caused by unpublished parts or discontinuity in the publisher's sequential designations. Frequency changes are not considered nongap breaks.
    Gaps - Level 3 | Gaps - Level 4 | Nongap Breaks - Level 3 | Nongap Breaks - Level 4

    Gaps - Level 3

    • If no issues of a volume are held, record the gap.
      If no issues of volume 3 are held:

      v.1(1950)-v.2(1951), v.4(1953)-v.8(1957)

    • If some issues of a volume are held, do not record the gap.
      If any issue of volume 3 is held:

      v.1(1950)-v.8(1957)

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    Gaps - Level 4

    • If no issues of a volume are held, record the gap.
      v.1(1950)-v.2(1951),
      v.4(1953)-v.6(1955)
    • If some issues of a volume or the entire volume are held, record the gap.
      v.7:no.1(1956:Feb.)-v.7:no.2(1956:Apr.),
      v.8(1957)
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    Nongap Breaks - Level 3

    • If a complete volume is not published, record the gap because it is at the highest level.
      Volume 3 was never published:

      v.1(1950)-v.2(1951); v.4(1953)-v.8(1957)

    • If an issue of a volume is not published, do not record the gap.
      If the spring issue of volume 3 is not published:

      v.1(1950)-v.8(1957)

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    Nongap Breaks - Level 4

    • If a complete volume is not published, record the nongap break.
      Volume 3 was never published:

      v.1(1950)-v.2(1951); v.4(1953)-v.6(1955)

    • If an issue of a volume is not published, record the nongap break.
      No more issues for volume 7 were published:

      v.7:no.1(1956:Feb.)-v.7:no.2(1956:Apr.); v.8(1957)

    • If the publisher changes enumeration or chronology, record the nongap break.
      Publisher switches from volume and year to annual editions:
      
      v.1(1993)-v.3(1995);
      1996 ed.
    • If the publisher introduces a new series, record the nongap break.
      Publisher introduces Series 2:
      
      ser.1:v.1(1985)-ser.1:v.10(1994);
      ser.2:v.1(1995)-ser.2:v.2(1996)
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