Dạng tài liệu: | Tư liệu ngôn ngữ (Sách) | Thông tin mô tả: | Trieu, Thi Hong Hanh Some aspects of environmental lease for ecottourism business in Cat Ba national park, Hai Phong city,VietNam / Trieu, Thi Hong Hanh; Supervisor: Pham Van Dien Hanoi, 2014 32 p. : Appendix ; 30 cm
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