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  1. By: Beron, Petar
    Type: Article
    In: Historia naturalis bulgarica
    Volume: 5
    Date: 1995
    Page Range: 13--18
    Publication Info: Sofiia, Bulgarska akademiia na naukite, c1989-
  2. By: Beron, Petar
    Type: Article
    In: Historia naturalis bulgarica
    Volume: 5
    Date: 1995
    Page Range: 3--12
    Publication Info: Sofiia, Bulgarska akademiia na naukite, c1989-
  3. By: Beron, Petar - Mitov, Plamen Genkov
    Type: Article
    In: Historia naturalis bulgarica
    Volume: 6
    Date: 1996
    Page Range: 17--23
    Publication Info: Sofiia, Bulgarska akademiia na naukite, c1989-
  4. By: Beron, Petar
    Type: Article
    In: Historia naturalis bulgarica
    Volume: 8
    Date: 1997
    Page Range: 85--100
    Publication Info: Sofiia, Bulgarska akademiia na naukite, c1989-
  5. By: Beron, Petar
    Type: Article
    In: Historia naturalis bulgarica
    Volume: 10
    Date: 1999
    Page Range: 13--33
    Publication Info: Sofiia, Bulgarska akademiia na naukite, c1989-
  6. By: Beron, Petar
    Type: Article
    In: Bonner zoologische Monographien
    Volume: 46
    Date: 2000
    Page Range: 153--188
    Publication Info: Bonn, Zoologisches Forschungsinstitut und Museum Alexander Koenig,
  7. By: Beron, Petar
    Type: Article
    In: Historia naturalis bulgarica
    Volume: 13
    Date: 2001
    Page Range: 53--68
    Publication Info: Sofiia, Bulgarska akademiia na naukite, c1989-
  8. By: Beron, Petar
    Type: Article
    In: Historia naturalis bulgarica
    Volume: 15
    Date: 2002
    Page Range: 147--149
    Publication Info: Sofiia, Bulgarska akademiia na naukite, c1989-
  9. By: Beron, Petar
    Type: Article
    In: Historia naturalis bulgarica
    Volume: 14
    Date: 2002
    Page Range: 29--44
    Publication Info: Sofiia, Bulgarska akademiia na naukite, c1989-
  10. By: Beron, Petar
    Type: Article
    In: Historia naturalis bulgarica
    Volume: 14
    Date: 2002
    Page Range: 45--65
    Publication Info: Sofiia, Bulgarska akademiia na naukite, c1989-
  11. By: Beron, Petar
    Type: Article
    In: Historia naturalis bulgarica
    Volume: 15
    Date: 2002
    Page Range: 73--78
    Publication Info: Sofiia, Bulgarska akademiia na naukite, c1989-