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  1. 1
  2. 2
    Published 1990
    Moskva : In-t so︠t︡siologii AN SSSR, 1990.
    49 p. ; 20 cm.
  3. 3
    Published 1983
    Novosibirsk : Akademi︠i︡a nauk SSSR, Sibirskoe otd-nie, In-t ėkonomiki i organiza︠t︡sii promyshlennogo proizvodstva, 1983.
    162 p. : ill. ; 20 cm.
  4. 4
    Published 1992
    Moskva : In-t slav︠i︡anovedeni︠i︡a i balkanistiki RAN, 1992.
    128 p. ; 20 cm.
  5. 5
  6. 6
    Published 1984
    Plovdiv : Plovdivski universitet "Paisiĭ Khilendarski", 1984.
    282 p. ; 21 cm.
  7. 7
    Published 1985
    Moskva : Vses. nauchno-issl. in-t sistemnykh issledovaniĭ, 1985.
    86 p. ; 26 cm.

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