Подобни библ. документи

• Waterbirds of Bourgas wetlands : results and evaluation of the monthly waterbird monitoring, 1996-2002 /
  Публикувано: (2005)
• Mid-winter numbers of waterbirds in Bulgaria (1977-2001) : results from 25 years of mid-winter counts carried out at the most important Bulgarian wetlands /
  от: Michev, Taniı̐uı̐Ł Manev.
  Публикувано: (2003)
• GESTION des effluents des cultures legumieres sur substrat
  Публикувано: (2002)
• Waterbirds of Bourgas Wetlands Results and evaluation of the monthly waterbird monitoring 1996-2002
  Публикувано: (2005)
• Waterbirds of Bourgas Wetlands Results and evaluation of the monthly waterbird monitoring 1996-2002
  Публикувано: (2005)