http://www.flashcardexchange.com/tag/xponder www.flashcardexchange.com: xponder Flashcards en-us Wed, 15 Feb 2012 05:17:55 PST Wed, 15 Feb 2012 05:17:55 PST support@flashcardexchange.com 720 http://www.flashcardexchange.com/flashcards/view/437601 VFR regulations and publications 2007-02-13 http://www.flashcardexchange.com/flashcards/view/437601