กระดาษ, ยู่ยี่, รีไซเคิล, กระดาษสีน้ำตาล, เนื้อผ้า, การรีไซเคิล, วัสดุ, ขรุขระ, แบบแผน, นิเวศวิทยา, ของเสีย
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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