= Slaveykov, Petar Lozanov
      5 
        5

	[книга]
	Fourth International Conference Global changes and problems theory and practice
	International Conference Global changes and problems theory and practice, IV. Sofia. 2007    Slaveykov, Petar Lozanov и др., редактор, предг. - Славейков, Петър Лозанов
	Sofia : St. Kliment Ohridski univ.
	2008
ISBN:	978-954-2695-3
	Екология - конференции

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