Columbia subject headings:
Biotic communities--United States.
Landscape protection--United States.
Native plants for cultivation--United States.
Natural landscaping--United States.
Restoration ecology--United States.
Harvard subject headings:
Native plants for cultivation--United States.
Natural landscaping--United States.
Natural landscaping.
Phytogeography--United States.
Plant communities--United States.
Restoration ecology
Restoration ecology--United States.
Princeton subject headings: