หนังสือ, กอง, อ่าน, หนังสือเก่า, วรรณกรรม, การศึกษา, การเรียนรู้, ห้องสมุด, เก่า, กระดาษ, ตำราเรียน
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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