ตัวอักษร, abc, ลูกบอล, รอบ, การศึกษา, ทอง, ฉาบ, การรู้หนังสือ, ไม่รู้หนังสือ, การไม่รู้หนังสือ, การอบรม
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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