Đăng bởi Hoàng Oanh
"tong-quan-ve-dia-hinh-chau-a"
"he-thong-song-va-ho-o-chau-a"
"khi-hau-o-cac-khu-vuc-khac-nhau-cua-chau-a"
"tai-nguyen-tu-nhien-cua-chau-a"
"tai-nguyen-rung-cua-chau-a"
"tai-nguyen-nuoc-cua-chau-a"