Columbia subject headings:
Infrastructure (Economics)--Environmental aspects--Italy, Northern.
Landscape protection--Italy, Northern.
Sustainable development--Italy, Northern.
Transportation--Environmental aspects--Italy, Northern.
Harvard subject headings:
Infrastructure (Economics)--Environmental aspects--Italy, Northern.
Landscape protection--Italy, Northern.
Sustainable development--Italy, Northern.
Transportation--Environmental aspects--Italy, Northern.
Princeton subject headings:
Infrastructure (Economics)--Environmental aspects--Italy, Northern.
Landscape protection--Italy, Northern.
Sustainable development--Italy, Northern.
Transportation--Environmental aspects--Italy, Northern.