สี, บทคัดย่อ, สี่เหลี่ยมผืนผ้า, การจัดการ, พื้นหลัง, พื้นผิว, แบบแผน
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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