Necissa Y, Chabbi Chemrouk N. Application of the contingent valuation method for the ‎estimation of the economic value of the heritage of Tlemcen park. DJEI [Internet]. 2020Apr.21 [cited 2024Nov.22];6(2):-. Available from: http://journals.lagh-univ.dz/index.php/djei/article/view/398