aspect de l'environnement
(
2
)
aspectos ambientales
(
2
)
climate change
(
2
)
climatic changes
(
2
)
economic aspects
(
2
)
environmental aspects
(
2
)
environmental economics
(
2
)
technology & engineering
(
2
)
tourism
(
2
)
aeronautics
(
1
)
aeronautics - environmental aspects
(
1
)
aeronautics -- environmental aspects
(
1
)
aeronautics / environmental aspects
(
1
)
aeronautics environmental aspects
(
1
)
aeronautics, commercial
(
1
)
aeronáutica
(
1
)
aerostation
(
1
)
agri-tourism
(
1
)
agrictourism
(
1
)
agricultura sostenible
(
1
)
agricultural tourism
(
1
)
agriculture
(
1
)
agriculture durable
(
1
)
agritourism
(
1
)
agro-tourism
(
1
)
agrotourism
(
1
)
agroturismo
(
1
)
air navigation
(
1
)
air pollution
(
1
)
air transport
(
1
)