Подобни библ. документи

• Transfer of zinc along the chain "soil-plant-animal" in a foothill area of Western Bulgaria /
  Публикувано: (2005)
• Structural changes in Bulgarian agriculture
  от: Kancev, Ivan
  Публикувано: (1999)
• Some issues on the transformation of rural regions in Bulgaria
  от: Ilieva, Margarita
  Публикувано: (2001)
• Economic efficiency of cultivation and fertilization system on carbonate chernozem in Northwest Bulgaria /
  от: Hristov, I.
  Публикувано: (2006)
• Beneficial organisms (entomopathogens, predators and parasitoids) on the phytophagous pests of peach biocenoses in Bulgaria /
  от: Balevski, Nikolaj
  Публикувано: (2006)