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Page 1: Srinakharinwirot Universitykids-d.swu.ac.th/.../123456789/1760/13/chapter4.pdf · 2011. 4. 7. · Created Date: 3/24/2011 6:07:44 PM
Page 2: Srinakharinwirot Universitykids-d.swu.ac.th/.../123456789/1760/13/chapter4.pdf · 2011. 4. 7. · Created Date: 3/24/2011 6:07:44 PM
Page 3: Srinakharinwirot Universitykids-d.swu.ac.th/.../123456789/1760/13/chapter4.pdf · 2011. 4. 7. · Created Date: 3/24/2011 6:07:44 PM
Page 4: Srinakharinwirot Universitykids-d.swu.ac.th/.../123456789/1760/13/chapter4.pdf · 2011. 4. 7. · Created Date: 3/24/2011 6:07:44 PM
Page 5: Srinakharinwirot Universitykids-d.swu.ac.th/.../123456789/1760/13/chapter4.pdf · 2011. 4. 7. · Created Date: 3/24/2011 6:07:44 PM
Page 6: Srinakharinwirot Universitykids-d.swu.ac.th/.../123456789/1760/13/chapter4.pdf · 2011. 4. 7. · Created Date: 3/24/2011 6:07:44 PM
Page 7: Srinakharinwirot Universitykids-d.swu.ac.th/.../123456789/1760/13/chapter4.pdf · 2011. 4. 7. · Created Date: 3/24/2011 6:07:44 PM
Page 8: Srinakharinwirot Universitykids-d.swu.ac.th/.../123456789/1760/13/chapter4.pdf · 2011. 4. 7. · Created Date: 3/24/2011 6:07:44 PM
Page 9: Srinakharinwirot Universitykids-d.swu.ac.th/.../123456789/1760/13/chapter4.pdf · 2011. 4. 7. · Created Date: 3/24/2011 6:07:44 PM
Page 10: Srinakharinwirot Universitykids-d.swu.ac.th/.../123456789/1760/13/chapter4.pdf · 2011. 4. 7. · Created Date: 3/24/2011 6:07:44 PM
Page 11: Srinakharinwirot Universitykids-d.swu.ac.th/.../123456789/1760/13/chapter4.pdf · 2011. 4. 7. · Created Date: 3/24/2011 6:07:44 PM
Page 12: Srinakharinwirot Universitykids-d.swu.ac.th/.../123456789/1760/13/chapter4.pdf · 2011. 4. 7. · Created Date: 3/24/2011 6:07:44 PM
Page 13: Srinakharinwirot Universitykids-d.swu.ac.th/.../123456789/1760/13/chapter4.pdf · 2011. 4. 7. · Created Date: 3/24/2011 6:07:44 PM
Page 14: Srinakharinwirot Universitykids-d.swu.ac.th/.../123456789/1760/13/chapter4.pdf · 2011. 4. 7. · Created Date: 3/24/2011 6:07:44 PM
Page 15: Srinakharinwirot Universitykids-d.swu.ac.th/.../123456789/1760/13/chapter4.pdf · 2011. 4. 7. · Created Date: 3/24/2011 6:07:44 PM
Page 16: Srinakharinwirot Universitykids-d.swu.ac.th/.../123456789/1760/13/chapter4.pdf · 2011. 4. 7. · Created Date: 3/24/2011 6:07:44 PM
Page 17: Srinakharinwirot Universitykids-d.swu.ac.th/.../123456789/1760/13/chapter4.pdf · 2011. 4. 7. · Created Date: 3/24/2011 6:07:44 PM