Nguyen Thanh Tuong, Truong Thi Sen. A STUDY ON THE IMPACTS OF TOURISM ACTIVITIES ON THE NATURAL ENVIRONMENT AND SOLUTIONS TO THE MANAGEMENT OF THE NATIONAL PARK PHONG NHA – KE BANG. jshe [Internet]. 2012Sep.15 [cited 2024Nov.23];2(3):49-6. Available from: https://jshe.vn/index.php/jshe/article/view/77