Policies and Procedures of the Library of Congress Decimal Classification Division
Segmentation in DDC numbers
- One aid to reduction of the full DDC number is the segmentation provided in DDC numbers assigned by such centralized cataloging services as the Decimal Classification Division of the Library of Congress and the Library and Archives Canada.
- The segmentation is indicated by a prime mark ('), a slash mark (/), or other comparable indicators.
- The segmentation mark indicates the end of the abridged number (including, if applicable, the end of the abridged standard subdivision in the abridged number).
Examples illustrating segmentation methods
|The psychology of midlife
The psychology of adults (the number found in the abridged edition)
|6||Persons in middle adulthood (the remainder of the number found in the schedules of the unabridged edition)|
|A biography of Susan B. Anthony
Election systems and procedures; suffrage (the number found in the abridged edition)
|23092||23 Women's suffrage (the remainder of the number found in the schedules of the unabridged edition) plus 092 Persons (from unabridged Table 1)|
|282.092/2||Collected biography of Catholics|
|282.092||282 Roman Catholic Church (the number found in the schedules of the abridged edition) plus 092 Persons (from abridged Table 1)|
|2||Collected persons treatment (the remainder of the notation found in unabridged Table 1)|