Russian history and culture index : a microfiche collection of scarce books on 19th and early 20th century Russia from the Helsinki University Library.
University Microfilms International.
Ann Arbor, MI : University Microfilms International,
1978-
Include author, title, subject, and fiche number indexes.
Original microfiche collection was issued in units, each unit consisting of a number of rare works.  Some indexes are cumulative, covering a number of units, and they replace individual indexes to single units.
Helsingin yliopisto. Kirjasto