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    • The plan of water and water ecosystem protection for Karelian Pyhäjärvi 

      Kukkonen, Minna; Kiiski, Jaana; Luotonen, Hannu; Niinioja, Riitta (North Karelia Regional Environment Centre, 01 / 2005)
      Karelian Pyhäjärvi is a valuable clear water lake located on the border between North Karelia (Finland) and the Republic of Karelia (Russia). It has been included in many national and international programs. It belongs ...