บทคัดย่อ, พื้นหลัง, พรรค, ไฟ, ไฟพรรค, ส้ม, สีแดง, ทอง, สีเหลือง, อบอุ่น, สี
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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