Danum Valley: a paradigm in protected area management

administration aire de loisir budget budgets conservation de la nature efficiency eficacia faune et flore sauvages gestion labour land use malaisie malasia malaysia management mano de obra manpower monte protegido natural resources nature conservation nature reserves operations research presupuesto protected forests recreational areas recursos naturales reservas naturales ressource naturelle trabajo travail utilisation des terres vida silvestre wildlife zonas recreativas