[PREAMBLE. A note, similar to a "Description based on ..." note given on bibliographic records for serials, is of benefit for comparison of data on a bibliographic record vis-à-vis the date in the item in hand as it helps to pinpoint the time limits within which a bibliographic change has occurred. In addition, such information allows for better comprehension of a bibliographic record of material of which another institution has a copy in a different state of updating. Because the patterns of updating differ from publisher to publisher, the "description based on" statement cannot be presented in a single uniform manner.]

Add an appropriate note indicating the currency of information at the time the record is created or updated.

7B21. Example

See also:

7B. Notes