http://www.flashcardexchange.com/tag/sub1 www.flashcardexchange.com: sub1 Flashcards en-us Fri, 05 Sep 2008 03:54:00 PDT Fri, 05 Sep 2008 03:54:00 PDT support@flashcardexchange.com 720 http://www.flashcardexchange.com/flashcards/view/421275 Kira's subtraction cards Tue, 02 Jan 2007 12:00:00 PST http://www.flashcardexchange.com/flashcards/view/421275