Papua New Guinea. Dept. of Forests & Papua New Guinea. Dept. of Forests. Annual report. The Dept.
Chicago-viite (17. p.)Papua New Guinea. Dept. of Forests ja Papua New Guinea. Dept. of Forests. Annual Report. Port Moresby: The Dept.
MLA-viite (8. p.)Papua New Guinea. Dept. of Forests ja Papua New Guinea. Dept. of Forests. Annual Report. The Dept.
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