ทิมเบอร์แลนด์, การเก็บเกี่ยวต้นไม้, ตัดลง, ชีวมวล, ไม้ชีวภาพ
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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