Tham khảo Danh_sách_di_sản_thế_giới_bị_đe_dọa

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    Tài liệu tham khảo

    WikiPedia: Danh_sách_di_sản_thế_giới_bị_đe_dọa http://books.google.de/books?id=0TnY6PX_RyMC http://books.google.de/books?id=5qU7GqJa1-oC http://books.google.de/books?id=HuaGXdMTTmcC http://worldheritage-forum.net/en/ http://data.iucn.org/dbtw-wpd/edocs/2009-066.pdf http://en.unesco.org/news/ethiopian-world-heritage... http://en.unesco.org/news/gelati-monastery-georgia... http://en.unesco.org/news/world-heritage-site-como... http://unesdoc.unesco.org/images/0008/000818/08184... http://whc.unesco.org/archive/1979/cc-79-conf003-1...