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Norbert Wiener Norbert Vollertsen Norberto Rivera Carrera Norbert Wójtowicz Norbert Hauata Norbert Elias Norbert Feketics Norberg (đô thị) Norberčany Narberth, PennsylvaniaTài liệu tham khảo
WikiPedia: Norbert Vollertsen http://freekorea.blogspot.com/ http://freekorea.blogspot.com/2005/10/ofk-intervie... http://www.iht.com/articles/2001/01/09/kor.2.t_0.p... http://www.rjkoehler.com/2006/09/25/things-getting... http://www.kcna.co.jp/item/1999/9908/news08/05.htm http://www.kcna.co.jp/item/1999/9908/news08/23.htm http://www.kcna.co.jp/item/2001/200101/news01/16.h... //iss.ndl.go.jp/api/openurl?ndl_jpno=20208614 http://www.goodnewsmag.org/magazine/3MayJune/mj02k... http://www.icasinc.org/2003/2003f/2003fnsv.html