Keya to the insects of the European part of the USSR/

समान संसाधन

• History of the Ussr.
  द्वारा: HISTORY of the USSR
  प्रकाशित: (1977)
• USSR: its people its society its culture/
  द्वारा: Fitzsimmons, Thomas
  प्रकाशित: (1960)
• Philosophy in the USSR : problems of historical materialism /
  द्वारा: Progress Publishers
  प्रकाशित: (1977)
• Philosophy in the USSR: problems of historical materialism/
  द्वारा: Konstantinov, F. V.
  प्रकाशित: (1981)
• Climates of the U.S.S.R/
  द्वारा: BORISOV, A.A
  प्रकाशित: (1965)