5B3. Unnumbered pages or leaves
When unnumbered pages or leaves (printed or blank) are not included in a sequence of pagination or foliation, count them according to the terms used to describe the rest of the publication or the part of the publication with which they are associated. In ambiguous cases count them as leaves when they are all printed on one side only; otherwise generally count them as pages. Use arabic numerals within square brackets. Do not count possibly blank leaves wanting according to signature count and not known to exist in other copies. For works published before 1801 (and optionally for other works), include in the count blank leaves at the beginning of the first gathering or at the end of the final gathering when they are present in a copy in hand or known to be present in other copies. Example 1
Consider that numbered sequences include unnumbered pages or leaves falling logically within the sequence, generally counting back from the recorded number to 1. Example 2
Give in the following manner unnumbered blank pages or blank leaves interrupting a numbered sequence: Example 3
If the number of blank pages or leaves is small, optionally supply a correction instead, as instructed in 5B7.
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