หนังสือ, ด้าน, แว่นตา, อ่าน, พจนานุกรม, เยอรมันเก่า, ความรู้, เพื่อเรียนรู้
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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