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Donald Trump Donald O'Connor Donald J. Cram Donald Knuth Donald H. Bochkay Donald Keyhoe Donald Rumsfeld Donald Howard Menzel Donald Trump Jr. Donald Eugene WebbTài liệu tham khảo
WikiPedia: Donald_Keyhoe http://cevsite.com/keyhoe.htm http://galenet.galegroup.com/servlet/BioRC http://www.heraldtribune.com/article/20080111/BLOG... http://www.herogames.com/forums/showthread.php?t=4... http://www.sacred-texts.com/ufo/fsar/index.htm http://www.hrc.utexas.edu/multimedia/video/2008/wa... http://data.bibliotheken.nl/id/thes/p071936114 //archive.org/search.php?query=((subject:%22Keyhoe... http://librivox.org/author/9829 http://mak.bn.org.pl/cgi-bin/KHW/makwww.exe?BM=1&N...