environmental policy
(
12
)
pollution
(
11
)
economic aspects
(
10
)
environnement
(
9
)
politique gouvernementale
(
8
)
política ambiental
(
8
)
aspect économique
(
7
)
environmental protection
(
7
)
economics
(
6
)
environmental quality
(
6
)
umweltschutz
(
6
)
umweltpolitik
(
5
)
water
(
5
)
aspectos económicos
(
4
)
economie de l'environnement
(
4
)
environment and state
(
4
)
environmental control
(
4
)
environmental management
(
4
)
government policy
(
4
)
natural resources
(
4
)
state and environment
(
4
)
united states
(
4
)
vereinigte staaten
(
4
)
water pollution
(
4
)
water-supply
(
4
)
air pollution
(
3
)
contaminación
(
3
)
eau
(
3
)
environmental law
(
3
)
medio ambiente
(
3
)