พื้น, ดิน, แห้ง, โคลน, ร้าว, ความกระหายน้ำ, แบบแผน, เนื้อเยื่อ, บทคัดย่อ, ภูมิอากาศ, การเกษตร
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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