หนังสือ, ห้องสมุด, กระได, ชั้นวางหนังสือ, การศึกษา, หิ้ง, ในบ้าน, วิจัย, การเรียนรู้, วรรณกรรม, ชุด
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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