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Norman Fucking Rockwell! Norman Bates Norman Borlaug Norman Morrison Norman Reedus Norman & giác quan thứ sáu Norman Lockyer Normandie Norman Foster Ramsey, Jr. Norman AngellTài liệu tham khảo
WikiPedia: Norman_Lockyer http://www.oxforddnb.com/view/article/34581 http://www.sacred-texts.com/neu/eng/sac/index.htm http://link.springer.com/referenceworkentry/10.100... http://articles.adsabs.harvard.edu/full/1920Obs...... http://articles.adsabs.harvard.edu/full/1920PASP..... http://articles.adsabs.harvard.edu/full/1921ApJ...... http://articles.adsabs.harvard.edu/full/1921JRASC.... http://articles.adsabs.harvard.edu/full/1921MNRAS.... http://articles.adsabs.harvard.edu/full/1994QJRAS.... http://articles.adsabs.harvard.edu/full/2005AntAs....