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NATIONAL PARKS AND RESERVES RESERVA NATURAL 4 LAW AND LEGISLATION 3 PARQUES NACIONALES Y RESERVAS 3 WILDERNESS AREAS 3 ADMINISTRACI�ON P�UBLICA 2 DERECHO Y LEGISLACI�ON 2 ENVIRONMENTAL PROTECTION 2 HISTORY 2 LAND USE 2 NATURE CONSERVATION 2 PUBLIC ADMINISTRATION 2 RESERVAS NATURALES 2 SOCIAL ASPECTS 2 TOURISM 2 TURISMO 2 BIODIVERSITY 1 CONSERVACION DE LA NATURALEZA 1 CONSERVACI�ON DE LA NATURALEZA 1 CONSERVATION DES RESSOURCES NATURELLES 1 CONSERVATION OF NATURAL RESOURCES 1 CONTROL DE CALIDAD 1 CULTURAL PARKS 1 CULTURAL PROPERTY 1 DERECHO AMBIENTAL 1 ECONOMIC ASPECTS 1 ENVIRONMENTAL ASPECTS 1 ENVIRONMENTAL LAW 1 FOREST POLICY 1 GOVERNMENT POLICY 1