เทคโนโลยี, กลศาสตร์, เนื้อไม้, โลงศพ, เครื่องดนตรี, กล่องดนตรี, โน้ตเพลง
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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