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2. http://kroosuveera.blogspot.com/2011/09 /blog-post_13.html 3. 4. 5. http://www.chakkham.ac.th/krusuriya/ind ex.php?view=article&id=101 6. Imac Finger Math) 7. http://www.rayongwit.ac.th/chanarat/unit 1/unit1-3.html 8. http://krusommawan.bps.in.th/index.php/i t23143/34-sheet3-type-of-it-project 9. http://krusommawan.bps.in.th/index.php/i t23143/34-sheet3-type-of-it-project 10. Quickly 11. http://krusommawan.bps.in.th/index.php/i t23143/34-sheet3-type-of-it-project 12. - 13. http://krusommawan.bps.in.th/index.php/i t23143/34-sheet3-type-of-it-project