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Razvoj okoljskih dejavnosti v Sloveniji
Slabe Erker, Renata, (2005)
Economic and cultural values related to protected areas, Part 2: Promotion of regional development and PES (payment for ecosystem services) schemes in the regions of Tatra (PL) and Slovensky Raj (SK) national parks, and Maramures natural park (RO)
Getzner, Michael, (2010)
Sistematizacija in evalvacija trga eko-dejavnosti v Sloveniji