Columbia subject headings:
Abandoned mined lands reclamation.
Community development.
Community museums.
Geoparks.
Reclamation of land.
Harvard subject headings:
Abandoned mined lands reclamation.
Community development.
Community museums.
Geoparks.
Reclamation of land
Princeton subject headings:
Abandoned mined lands reclamation.
Community development.
Community museums.
Geoparks.
Reclamation of land.