สมุดบันทึก, แว่นตา, เส้นขยุกขยิก, แบบแผน, หนังสือ, แว่นอ่านหนังสือ, เอกสาร, ความรู้, วรรณกรรม, ห้องสมุด, โรงเรียน
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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