Мифологические рассказы русских крестьян XIX-ХХ вв / составление, подготовка текстов, вступительная статья и комментарии М.Н. Власовой.(OCLC #900161990)
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RDA does not bracket unnumbered pages in notes, but it would have felt odd to refer to pages 909-910 when there were only 909 pages in the extent. I could have recorded the extent as “909 pages, 1 unnumbered page” but that would not have made the 504 clearer, so I just went with:
504 __ ǂa Includes bibliographical references.
frakcancer asked for clarification on why deduced information would not be bracketed in a note. My post overstated this; this is not an RDA rule, but rather from the LCC-PS for RDA 1.7.1 (Transcription), which says “Do not use square brackets in notes except when they are used in quoted data.” So if you are following those policy statements, supplied page numbers in the bibliographical references note should not bracketed. Thanks for asking! 🙂