Literature on the Penza region for 1985. 1st half of the year: (Literature indicator)

Literature on the Penza region for 1985. 1st half of the year: (literature pointer).- Penza: [b.I.], 1985. -Appendix No. 1 to the act of acceptance and transfer of digital content (cooperation agreement dated 08/14/2012)..Electronic copy source: Penza