Liên quan Niels Bohr Nielsen Holdings Nielsen Ratings Niels Henrik Abel Nielsen Corporation Niels Gade Niels Kaj Jerne Nielsen Media Research Niels Ryberg Finsen Niels Aagaard
Tài liệu tham khảo WikiPedia: Nielsen_SoundScan http://www.hiphopdx.com/index/editorials/id.1021/t... http://query.nytimes.com/gst/fullpage.html?res=9D0... http://www.soundscan.com/
