If the catalog record has a 1xx field, the entry in this field should appear on the piece in hand. If adding from a bookcard, the author main entry will appear first, and the title below it, indented slightly. Again, the exact form of the name may vary. Many serials do not have a title page, in which case the title is instead taken from the cover. Slight variations in title may be accounted for in notes in the 246 or 500 fields.
Title varies slightly.
Check the call no. If two serials cataloged under title main entry have identical titles as well as identical call nos. At least one of the records will have a 130 Uniform Title Heading field with a parenthetical qualifier following the title. The qualifier will contain a year indicating when the title began. Choose the correct record by examining the dates on both records, and seeing where your volume fits in.